Answer:
a) 64.27%
b) 58%
c) ethanol is the limiting reactant
d) ethanol is the limiting reactant
Explanation:
We have to note that the expected yield is the theoretical yield while the actual mass or amount of product formed is the actual yield.
a) theoretical yield=68.3g
Actual yield= 43.9 g
Percentage yield= 43.9/68.3 ×100
Percentage yield= 64.27%
b) theoretical yield= 0.0722 moles
Actual yield = 0.0419
Percentage yield= 0.0419/0.0722 × 100
Percentage yield= 58%
c) note that the limiting reactant yields the least number of moles of product
Ethanol will be the limiting reactant since it is not present in excess.
d) from the reaction equation;
1 mole of acetic acid produces 1 mole of ethyl acetate
0.58 moles of ethanol produces 0.58 moles of ethyl acetate
1 mole of acetic acid yields 1 mole of ethyl acetate
Hence 0.82 moles of acetic acid yields 0.82 moles of ethyl acetate
Hence ethanol is the limiting reactant.
Classify each of the following as homogeneous or heterogeneous.
a. a door
b. the air you breathe
c. a cup of coffee (black)
d. the water you drink
e. salsa
f. your lab partner
a and e are heterogeneous (door and salsa), b, c, and d are homogeneous (air, black coffee, and pure water), and f cannot be classified as it pertains to a person rather than a substance or mixture. Option A and E
a. A door: Heterogeneous. A door is typically made up of various materials such as wood, metal, glass, etc. These materials have different properties and can be easily distinguished, making the door a heterogeneous object.
b. The air you breathe: Homogeneous. Air is a mixture of gases, primarily nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. On a macroscopic scale, air appears uniform and consistent throughout, making it a homogeneous mixture.
c. A cup of coffee (black): Homogeneous. A cup of black coffee consists of water and coffee solutes that are evenly distributed throughout the liquid. It appears uniform and consistent, indicating a homogeneous mixture.
d. The water you drink: Homogeneous. Pure water, without any dissolved substances or impurities, is a homogeneous substance. It is composed of H2O molecules that are uniformly distributed throughout the liquid.
e. Salsa: Heterogeneous. Salsa is a mixture of various ingredients such as tomatoes, onions, peppers, and spices. These ingredients have different textures, colors, and sizes. The different components can be visually distinguished, making salsa a heterogeneous mixture.
f. Your lab partner: Heterogeneous. A lab partner refers to a person, and individuals are not considered homogeneous or heterogeneous in the same sense as substances or mixtures. They are complex beings with different physical characteristics, thoughts, and behaviors. Thus, categorizing a lab partner as homogeneous or heterogeneous is not applicable in this context. Option A and E
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1- A sample of helium has a volume of 480 mL at 47.0°C and 740 mm Hg. The temperature is lowered to 22.0°C and the pressure to 625 mm Hg. What is the new volume?A) 266 mL B) 373 mL C) 524 mL D) 616 mL E) 1214 mL
The new volume is roughly 373 mL.The right response is B) 373 mL.
we can utilize the consolidated gas regulation condition, which relates the underlying and last states of strain, volume, and temperature for a given measure of gas. The condition is as per the following:
Where: (P1 V1) / T1 = (P2 V2) / T2
P1 is the initial pressure, V1 is the initial volume, and T1 is the initial temperature. P2 is the final pressure, V2 is the final volume—the value we want to find—and T2 is the final temperature.
P1 = 740 mm Hg
V1 = 480 mL
T1 = 47.0°C = 320.15 K
P2 = 625 mm Hg
T2 = 22.0°C = 295.15 K
Subbing the qualities into the situation, we have:
Now we can solve for V2: (740 mm Hg 480 mL) / 320.15 K = (625 mm Hg V2) / 295.15 K
(740 mm Hg × 480 mL × 295.15 K) = (625 mm Hg × V2 × 320.15 K)
Improving the condition:
V2 = (740 mm Hg × 480 mL × 295.15 K)/(625 mm Hg × 320.15 K)
Working out the worth:
V2 ≈ 373 mL
Thusly, the new volume is roughly 373 mL.
The right response is B) 373 mL.
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A cube of iron at 20. Degrees C is placed in contact with a cube of copper at 60 degrees C. Which statement describes the initial flow of heat between the cubes?
Answer:
D) Heat flows from the copper cube to the iron cube.
Explanation:
These are the options for the question
A) Heat does not flow between the cubes.
B) Heat flows in both directions between the cubes
C) Heat flows from the iron cube into the copper cube.
D) Heat flows from the copper cube to the iron cube.
From the knowledge of
second law of Thermodynamicss, which says heat moved from higher temperature to lower temperature region, and termal conduction,energy such as heat will only flow from higher temperature to lower temperature, which means the heat will move from higher concentration to lower Concentration. As the cube of copper at 60 degrees is heated the atoms beginnings to vibrate as it acquire energy then moves and flow to the lower temperature part.
Therefore, Heat flows from the copper cube to the iron cube.
What are small subunits or building blocks of a large molecule called?
A. Macromolecules
B. Monomer
C. Polymer
D. Organic
Answer:
c
Explanation:
What type of energy results from the position of an object?
1.kinetic
or
2.potential
Answer:
kinetic energy
Explanation:
A certain liquid has a mass of 98.7g. If the liquid has a volume of 56.1 mL, what would be the density of this liquid?
Answer:
1.76 g/ml
Explanation:
98.7 / 56.1 = 1.7593582888
Round to the nearest hundredth = 1.76
It takes a wavelength of 2.757 × 10^2 nanometers to remove an electron from an iron atom. Determine the frequency of a photon of light that could accomplish this.
What kind of wave/ray could accomplish this?
Frequency is defined as the number of oscillations of a wave per unit time being, measured in hertz. The frequency is directly proportional to the pitch. Here the frequency of photon is
Wavelength of a wave is defined as the distance between two most near points in phase with each other. The distance between two consecutive crests or two consecutive troughs can be known as the wavelength.
The equation connecting frequency, wavelength and speed of light is:
ν × λ = c
Here ν = frequency, λ = wavelength and c = speed of light
ν = c / λ
3 × 10⁸ / 2.757 × 10⁻⁷ = 10.88
Electromagnetic waves have frequencies of this range.
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molecule x contains a sugar and a phosphate group. what is molecule x ?
How do scientists determine the number of neutrons in an isotope of an atom? O They find the number of protons. 0 They add the number of electrons and protons. They divide the atomic mass by two. They subtract the atomic number from the atomic mass.
Answer:
The three naturally-occurring isotopes of hydrogen. The fact that each isotope has one proton makes them all variants of hydrogen: the identity of the isotope is given by the number of protons and neutrons. From left to right, the isotopes are protium (1H) with zero neutrons, deuterium (2H) with one neutron, and tritium (3H) with two neutrons.
The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table.[2] It was coined by a Scottish doctor and writer Margaret Todd in 1913 in a suggestion to chemist Frederick Soddy.
The number of protons within the atom's nucleus is called atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number.
For example, carbon-12, carbon-13, and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13, and 14, respectively. The atomic number of carbon is 6, which means that every carbon atom has 6 protons, so that the neutron numbers of these isotopes are 6, 7, and 8 respectively.
Using what you can recall from this unit, write one or two short paragraphs describing John Dalton’s atomic model. If needed, search the Internet for descriptions of the model.
Answer:
Five points of Dalton's atomic theory:
1) all elements are made up of atoms.
2) atoms are so small that they cannot be divided any further.
3) an atom can neither be destroyed nor be formed.
4) atoms of an element are similar, they possess the same mass and same properties.
5) atoms of different elements combine in a definite ratio to form compounds.
Due to further experimentation, it was concluded that an atom is made up of small particles identified as protons, neutrons, and electrons. They can be further subdivided.
Another change is the presence of isotopes of atoms of different elements. Hence, atoms of the same element can also have different masses.
Hope this helps, have a nice day/night! :D
As per Dalton's atomic model atoms are the minuscule, distinct building blocks of all stuff.
What is Dalton's atomic model?
Dalton proposed that the concept of atoms may be used to explain the laws of conservation of mass as well as definite proportions. He proposed that atoms, of the kind, that he described as "solid, tightly compacted, hard, impenetrable, moving particle," are the smallest, indivisible units of matter.
Dalton's atomic model is as fellow:
Atoms are the minuscule, distinct building blocks of all stuff.Atoms are unbreakable and undividable.An element's atoms all have the same weight and other characteristics.Atoms of various elements have varying masses.To know more about Dalton's atomic model.
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which of the following statements is false? a. bimolecular reactions involve a collision between three molecules. b. according to collision theory, only those collisions with energy greater than ea can lead to reaction. c. a catalyst alters the rate of a reaction and is neither a product nor a reactant in the overall equation. d. in order for a reaction to occur, reactant molecules must collide with something. e. the transition state is a short-lived, high energy state, intermediate between reactants and products.
Answer:
A collision between three molecules.
Explanation:
A stock solution of magnesium chloride has a concentration of 120 mgml. how many milliliters of the stock solution are required to prepare 1.5 l of 25 mgml solution?
312.5 mL of magnesium chloride stock solution is needed to prepare 1.5 L of 25 mg/mL solution.
This type of chemical process is called dilution. It is the addition of water into a small amount of a concentrated solution or a stock solution to make it less concentrated. In this problem, the equation below is used.
(Concentration of stock solution)(Volume of stock solution needed)=(Resulting concentration of solution)(Resulting volume of solution)
For easier writing of the equation, subscript 1 can be assigned to the concentrated solution and subscript 2 for the diluted solution.
C1*V1=C2*V2
Substituting the given to the formula:
(120 mg/ml)*(V1)=(25 mg/ml)*(1.5 L)
V1= 0.3125 L
V1= 312.5 ml
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Silver bromide is the photosensitive material in 35 mm photographic film. When monochromatic light falls on film, the photons are recorded if
they contain sufficient energy to react with silver bromide in the film. The minimum energy needed to do this is approximately 57.9 kJ/mol. What
is the wavelength of this energy in nm?
The minimum energy needed by the photons to react with silver bromide in the film is approximately 57.9 kJ/mol. Then, the wavelength is 206 nm.
What is wavelength?Wavelength of a wave is the distance between two consecutive crests or troughs of the wave.
To find the wavelength of the energy in nm, we can use the equation:
E = hc/λ
where E is the energy in joules, h is Planck's constant (6.626 x 10⁻³⁴ J s), c is the speed of light (2.998 x 10⁸ m/s), and λ is the wavelength in meters.
First, we need to convert the energy from kJ/mol to J/photon:
57.9 kJ/mol = 57.9 x 1000 J/mol / 6.02 x 10²³ mol^-1
= 9.626 x 10²⁰ J/photon
Now we can use the equation above to find the wavelength:
9.626 x 10²⁰ J/photon = (6.626 x 10⁻³⁴ J s)(2.998 x 10⁸ m/s) / λ
Solving for λ, we get:
λ = hc/E = (6.626 x 10⁻³⁴ J s)(2.998 x 10^8 m/s) / 9.626 x 10⁻²⁰J/photon
= 2.06 x 10⁻⁷ m
Finally, we convert the wavelength from meters to nanometers:
λ = 2.06 x 10⁻⁷ m x (10⁻⁹ nm/m)
= 206 nm
Therefore, the wavelength of the energy needed to react with silver bromide in 35 mm photographic film is approximately 206 nm.
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3. Which of the following is NOT a major ingredient in weather?
A clouds
B sunshine
Cwater
D air
Answer:
I would say sunshine
Explanation:
the major ingredients are...
The four basic ingredients of weather and climate are pressure, moisture, wind, and temperature.
hope this helps!!
and please give me brainliest! :)
The option that is not a major ingredient in weather is B. Sunlight.
Weather simply means the state of the atmosphere at a particular place and time. It should be noted that the weather of a place can be different from another place. For example, a place can be sunny while another can be rainy.
The atmospheric phenomena that are the ingredients of weather are clouds, water, and air. Based on the question asked, sunlight isn't an ingredient.
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Which statement about the effect of concentration and temperature on the rate of a reaction is NOT correct?
If the concentration of a reactant is increased, the rate of reaction increases because more particles have sufficient energy to react.
If the concentration of a reactant is increased, the rate of reaction increases because more collisions between particles per second.
If the temperature is increased , the rate of reaction increases there are more collisions between particles per second.
If the temperature is increased , the rate of reaction increases because more particles have sufficient energy to react.
All of the statements regarding the effect of concentration and temperature on the rate of a reaction are correct. Therefore, there is no statement that is NOT correct.
When the concentration of a reactant is increased, the rate of reaction increases because there are more particles available for collisions, and therefore, more successful collisions per unit time. Similarly, when the temperature is increased, the rate of reaction increases because there are more collisions between particles, and they have more kinetic energy, which increases the chances of successful collisions.
The rate of a reaction refers to the change in the concentration of reactants or products per unit time. It is a measure of how quickly a chemical reaction is proceeding.
The rate of a reaction can be determined by measuring the change in concentration of any reactant or product over time, and it is usually expressed in units of mol/L/s or M/s. The rate of a reaction depends on various factors such as the concentration of reactants, temperature, pressure, and the presence of catalysts.
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--The given question is incomplete, the complete question is
"Which statement about the effect of concentration and temperature on the rate of a reaction is NOT correct? A) If the concentration of a reactant is increased, the rate of reaction increases because more particles have sufficient energy to react. B) If the concentration of a reactant is increased, the rate of reaction increases because more collisions between particles per second. C) If the temperature is increased , the rate of reaction increases there are more collisions between particles per second. D) If the temperature is increased , the rate of reaction increases because more particles have sufficient energy to react."--
If a gas occupies 1.5 liters at a pressure of 3.0 atm, what will be its pressure at a volume of 2.0 liters?
Answer:
P2 = 2.25 atm
Explanation:
Given:
V1 = 1.5 L. V2 = 2.0 L
P1 = 3.0 atm. P2 = ?
Use Boyle's law and solve for P2:
P1V1 = P2V2
or
P2 = (V1/V2)P1
= (1.5 L/2.0L)(3.0 atm)
= 2.25 atm
manufacturers make vegetable oils solid or semisolid at room temperature by .
Manufacturers make vegetable oils solid or semisolid at room temperature through a process called hydrogenation. Hydrogenation involves the addition of hydrogen gas to unsaturated vegetable oils, resulting in the conversion of some of the unsaturated fats into saturated fats.
This process increases the melting point of the oil and transforms it into a solid or semisolid form.
During hydrogenation, vegetable oils are heated and mixed with a catalyst, typically a metal catalyst like nickel, in the presence of hydrogen gas. The unsaturated fats in the oil undergo a chemical reaction called hydrogenation, where the carbon-carbon double bonds in the fatty acid molecules are converted into single bonds. This saturation process reduces the overall degree of unsaturation in the oil and increases its stability and solidification properties.
The hydrogenated vegetable oils, commonly known as trans fats, have a higher melting point and are solid or semisolid at room temperature. This property makes them suitable for various food applications, such as margarine, shortening, and bakery products, where a solid or semisolid texture is desired. However, it is worth noting that the consumption of trans fats has been linked to adverse health effects, and many manufacturers are now moving towards healthier alternatives and reducing the use of hydrogenated oils in their products.
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Manufacturers make vegetable oils solid or semisolid at room temperature through a process called hydrogenation.
Hydrogenation involves adding hydrogen gas to vegetable oils in the presence of a catalyst, typically nickel or palladium. This process causes the unsaturated fats in the oils to undergo a chemical reaction, converting them into saturated fats.
Saturated fats have a higher melting point and are solid or semisolid at room temperature, unlike the liquid form of unsaturated fats. By hydrogenating vegetable oils, manufacturers can increase their stability, improve texture, and extend shelf life. This transformation allows vegetable oils to be used as margarine, shortening, or in the production of solid or semisolid food products like baked goods and spreads.
Therefore, it is important to note that hydrogenation can result in the formation of trans fats, which have been associated with negative health effects. To address this concern, many manufacturers are transitioning to alternative methods or using healthier oils in their products.
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I need answers now!
Which statement describes the focus of an earthquake?
O It creates stress in rock.
O It develops in the lithosphere.
Olt lies above the surface where rock breaks.
O. It begins about 5 kilometers below Earth's surface.
Answer:
B It develops in the lithosphere
Explanation:
Answer:
B
Explanation:
I did the quiz
14. Which net ionic equation describes the reaction between K3PO4( aq) when it is mixed
with Al(NO3)3( aq)?
Al 3+( aq) + PO43-( aq) - AlPO4( s)
-
K+(aq) + NO3(aq) - KNO3(aq)
Al 3+( aq) +3NO3 -(aq) - 3AINO3( s)
-
3K +(aq) + PO43-( aq) – 3KPO4( s)
Explanation:
The net ionic equation is a chemical equation that depicts the elements, molecules, or ions that are directly involved in the chemical reaction itself. Likewise, spectator ions which is an ion that does not take part in the chemical equation where such species would be found in the solution both before and after the reaction.
Net ionic equations, similar to molecular equations, must be balanced not only by mass but also by charge. This implies that the overall charge of the net ionic equation is zero, or neutral. Lastly, only molecules in aqueous state can be separated into their ionic form.
Considering the reaction between potassium phosphate, \(K_{3}PO_{4}\), and aluminium nitrate, \(Al(NO)_{3}\). The balanced molecular equation of the reaction is
\(K_{3}PO_{4} \ (aq) \ + \ Al(NO_{3})_{3} \ (aq) \quad \longrightarrow \quad 3KNO_{3} \ (aq) \ + \ AlPO_{4} \ (s)\).
*Note that aluminium phosphate is in a solid state (precipitation) because it is an insoluble salt whereas potassium nitrate is a soluble salt.
Separate the molecules in the aqueous state into their ionic components.
\(3K^{+} \ (aq) \ + \ {PO_{4}}^{3-} \ (aq) \ + \ Al^{3+} \ (aq) \ + \ 3NO_{3} \ (aq) \quad \longrightarrow \quad 3K^{+} \ (aq) \ +\)
\(\ 3NO_{3} \ (aq) \ +\)
\(AlPO_{4} \ (s)\)
Canceling out the spectator ions yields the net ionic equation for the reaction.
\(Al^{3+} \ (aq) \ + \ {PO_{4}}^{3-} \ (aq) \quad \longrightarrow \quad AlPO_{4} \ (s)\)
the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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The solubility of Cu(OH)2 is 1.72 x 10-6 g per liter at 20 degrees celsius. Calculate the solubility product for Cu(OH)2
The solubility product is the product of the ion concentration raised to the power of their coefficients. The solubility of Cu(OH)2 is 1.72 x 10-6 g per liter at 20 degrees Celsius.
Determine the solubility product of Cu(OH)2Solution:The balanced equation of Cu(OH)2 is:Cu(OH)2 ⇌ Cu2+ + 2OH¯The equilibrium constant expression is:Ksp = [Cu2+][OH¯]2The molar solubility of Cu(OH)2 is given as 1.72 x 10-6 g/L. We need to find the solubility product of Cu(OH)2, Ksp.To find the concentration of Cu2+ and OH¯, let x be the molar solubility of Cu(OH)2,Cu(OH)2 ⇌ Cu2+ + 2OH¯Initials: 0 0Change: x + x + 2xEquilibrium: x x 2x
We can substitute these concentrations into the expression for Ksp:Ksp = [Cu2+][OH¯]2Ksp = (x)(2x)2Ksp = 4x3Since the molar solubility of Cu(OH)2 is 1.72 x 10-6 g/L, we can substitute it into the equation:1.72 x 10-6 = 4x3x = 6.45 x 10-5MSubstituting this value back into the expression for Ksp:Ksp = 4x3Ksp = 4(6.45 x 10-5)3Ksp = 1.4 x 10-19Therefore, the solubility product for Cu(OH)2 at 20 degrees Celsius is 1.4 x 10-19.
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A LOAEL is defined as:
The lowest hazard ratio in rats and mice
The Litany Of Adverse Elemental Liquidations
The lowest dose that demonstrates a significant increase in an observable adverse effect
The lowest level without an effect on biomarkers of exposure
The lowest level that causes death in 50% of the population over a defined period of time
A LOAEL is defined as the lowest dose that demonstrates a significant increase in an observable adverse effect. The term LOAEL stands for "Lowest Observed Adverse Effect Level."
When testing chemicals and other substances for toxicity, the goal is to determine the concentration or dose at which adverse effects begin to appear. The LOAEL is the lowest dose at which an adverse effect is observed. This value can be used to establish a safe level of exposure to a substance.
To determine the LOAEL, a series of tests are conducted in which different doses of the substance being tested are administered to test animals. The animals are observed for any adverse effects, such as changes in behavior, weight loss, or organ damage. The lowest dose at which an adverse effect is observed is the LOAEL.
It is important to note that the LOAEL is a relative measure of toxicity. It only provides information on the dose at which an adverse effect is first observed and not on the severity of the effect. In addition, the LOAEL may vary depending on the species tested and other factors.
In summary, the LOAEL is the lowest dose at which an observable adverse effect is detected. This value is used to establish a safe level of exposure to a substance.
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When might Accurate length measurement be important?
Answer:
When you are going to measure small lengths or objects or when you are going to measure things with great accuracy.
Explanation:
Why are telescopes important in helping us understand the universe
Hubble space telescopes is used to understand the universe
Telescopes have opened our eyes to the universe and early telescopes showed that Earth was not the center of the universe and as was previously believed and they also showed mountains and on the moon and then later telescopes have revealed geography and weather on the planets in our solar system for understand the universe hubble space telescopes is used and by viewing from the other side of the sky the hubble space telescope allows astronomers to see the universe without the distortion and that occurs as light passes through the Earth's atmosphere in this way telescopes important in helping us understand the universe
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If the acetic acid being titrated here were replaced by hydrochloric acid, would the amount of base needed to reach the equivalence point change?.
yes, the equivalence point would change as acetic acid is a weak acid and dissociates partially but hydrochloric acid is a strong acid and dissociates completely.
Between equivalence and endpoint, what is the difference?Equivalence and endpoint differ primarily in that the former refers to the point at which a chemical reaction ends and the latter, to the time at which a system's color changes.
Define equivalence point.When enough titrant has been administered to entirely neutralize the analyte solution in a titration, this is known as the equivalence point. The titrant (standard solution) has a molecular weight that is equal to the moles of the solution with the unknown concentration.
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( i need help on this one )
The following statement is an example of Newton's Second Law“ that it is much easier to carry your backpack when it is empty rather than when it’s full of textbooks”.
True
False
The following statement is an example of Newton's Third Law“When you are standing in a subway train and the train suddenly stops but your body continues to move forward”
True
False
Answer:
1. False
2.True
Explanation:
Which of the following is characteristics of non-metals?
A. They're always solid at room temperature
B. They tend to be denser than metals.
C. They're strong conductors of electricity
D. They tend to gain electrons in chemical reactions.
Answer:
D. They tend to gain electrons in chemical reactions
Explanation:
A student was given a sample of food and asked to determine the types of nutrients present in the sample. The student placed half of the sample in a test tube with Benedict’s solution and heated it. The solution turned brick red. When an iodine solution was added to the remaining half of the sample, it turned blue black. The student can correctly conclude that the food sample contained
The food sample contained starch and reducing sugar (carbohydrates).
The Benedict's test is used to test for the presence of reducing sugars, such as glucose, in a sample. When the Benedict's solution is added to a sample containing reducing sugars and heated, the solution will turn brick red.
The iodine test is used to test for the presence of starch in a sample. When iodine solution is added to a sample containing starch, it will turn blue-black.
So, in this case, the student can conclude that the food sample contained both starch and reducing sugars, as both tests produced positive results.
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If the price of music lessons falls to
$
20
$20dollar sign, 20, which of the following best describes the income and substitution effects?
If the price of music lessons falls to $20, the statement which best describes the income and substitution effects is: C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
What is price?Price can be define as an amount of money which is primarily set by the seller of a good (product), and it must be paid by a buyer to the seller, so as to enable the acquisition of this good (product).
What is an income effect?Income effect can be defined as a phenomenon which causes an individual (consumer) to adjust his or her consumption of a product due to an increase in its price and change in the level of income.
In conclusion, we can reasonably infer and logically deduce that for each music lesson Emily had purchased before, there is an extra $40 to spend on either music lessons or socks, and as such she might buy more of both due to the income effect.
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Complete Question:
Emily is a rational consumer who gets utility from socks and music lessons, and she considers both of these goods normal goods. Her marginal utility from socks is 50 utils and the price of socks is $5 per pair. Her marginal utility from music lessons is 600 utils and the price of music lessons is $60.
If the price of music lessons falls to $20, which of the following best describes the income and substitution effects?
A. The income effect is that she got a raise from her employer. The substitution effect is that music lessons are now relatively cheaper so she will buy more music lessons.
B. The income effect is that she effectively has more money to spend on either good. The substitution effect is that she will only buy socks now.
C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
D. The income effect is that she will no longer buy socks because she has more income to spend on music lessons, so she will only buy music lessons.
E. The substitution effect is that she now can spend more on either good. The income effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
What 2 elements on the periodic table add some serious seasoning to boring foods
Answer: sodium and chlorine
Explanation: sodium chloride is salt