how does the “Law of Conservation of Matter” explain how to write nuclear equations?
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Explanation
This is why the mass numbers and atomic numbers of the products must add up to equal the mass number and atomic number of the parent isotope.
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Help me i don’t know what to put here pls thank you!
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consider the equilibrium system described by the chemical reaction below. if 0.1908 moles of co2, 0.0908 moles of co and 0.0092 moles of h2o are present in a 2.00 l reaction vessel at equilibrium at 300 k what is the value of kc of the reaction at this temp?
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What is the value of kc of the reaction at this temperature 0.0049 or 4.9*10^-3
Calculate the value of the equilibrium constant Kc for the indicated system if 0.1908 mol CO2, 0.0908 mol H2, 0.0092 mol CO, and 0.0092 mol H2O vapor exist in a 2.00 L reaction vessel at equilibrium.
CO2 + H2 => CO + H2O
Write the equilibrium equation for the reaction system.
\(K_{c} =\frac{[CO][H_{2}O ]}{[CO_{2} ][H_{2} ]}\)
Since the equilibrium equation Kc for the reaction has been determined, ensure that the equilibrium quantities given are expressed in moles/liter (molarity). Each requires conversion.
[CO2] = 0.1908 mol CO2/2.00 L = 0.0954 M
[H2] = 0.0454 M
[CO] = 0.0046 M
[H2O] = 0.0046M
Substitute each concentration into the equilibrium equation and calculate the value of the equilibrium constant.
\(K_{c} =\frac{[0.0046][0.0046]}{[0.0954 ][0.0454]}=0.0049\)
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Witch is the best definition to describe a transfer of energy ?
Answers
Answer:
Energy transfer is the movement of energy from one place to another.
Explanation:
However, energy cannot be created or destroyed :)
You were given a 100. G wine sample to verify its age. Using tritium dating you observe that the sample has 0. 688 decay events per minute. Tritium has a half life of 12. 3 and fresh water exhibits 5. 5 decay events per minute per 100g. What year was the wine produced?.
Answers
Wine was produced 37 years ago (1984 as usual year 15,2021) that is shown in the calculations below.
Reaction rate is calculated using the formula rate = Δ[C]/Δt, where Δ[C] is the change in product concentration during time period Δt. The rate of reaction can be observed by watching the disappearance of a reactant or the appearance of a product over time.
The time can be represented as follows:
t= 2.303\∧ log A0/A
∧= 0.693/t 1/2
The rate of a reaction is proportional to the reciprocal of the time taken. Rate α 1 time Rate is inversely proportional to time. Units: s-1, min-1 etc.
The given parameters are as follows:
t1/2=12.3
A0=5.5
A=0.688
t= 2.303/(0.693/12.3) log (5.5/0.688)
t=36.9
t=37 years
Thus, wine was produced 37 years ago (1984 as usual year 15,2021)
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Which of the following statements is true about the relationships between photon energy, wavelength, and frequency?
Group of answer choices
The photon frequency is proportional to energy and inversely proportional to wavelength.
The photon frequency is inversely proportional to energy and proportional to wavelength.
The photon frequency is proportional to energy and proportional to wavelength.
The photon frequency is inversely proportional to energy and inversely proportional to wavelength.
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Answer: The Answer is A.
Explanation:
The amount of energy is directly proportional to the photon's electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon's frequency, the higher its energy. Equivalently, the longer the photon's wavelength, the lower its energy.
Hope this Helps!
The photon energy, wavelength, and frequency are the characteristic of the waves and particles. "The photon frequency is proportional to energy and inversely proportional to wavelength." Thus, option A is correct.
What is photon energy?Photon energy has been defined as the energy constituted by the photon of the atom. It is given by the product of Planck's constant and wave frequency. The frequency of the photons is in inverse relation to the wavelength. It is given as,
E = hυ = h c / λ
Here, E is energy, h is Planck's constant, c is the speed of light, υ id frequency, and λ is the wavelength.
On the other hand, the frequency is in direct relation to the energy. The higher the frequency of the photons higher will be its energy.
Therefore, option A. frequency is inversely proportional to the wavelength.
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which substance would be separated last by decreasing the temperature from its initial value
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The substance that would be separated last by decreasing the temperature from its initial value depends on the specific system and the phase diagram of the substances involved.
In general, as the temperature of a system decreases, the substances with the highest melting or boiling points will be separated last, as they require the highest amount of energy to transition from a liquid or gas phase to a solid phase.
For example, if you have a mixture of water (H2O) and sodium chloride (NaCl) at room temperature and decrease the temperature, water will freeze into ice at 0°C (32°F), while sodium chloride will remain in a liquid state until it reaches its freezing point of 801°C (1474°F). Therefore, in this case, sodium chloride would be separated last by decreasing the temperature from its initial value.
However, the answer can be different for different systems and substances, and may also depend on other factors such as pressure and composition of the mixture.
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can anyone tell me "what are the exceptions of law of reciprocal proportions??"
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What molecule solid would have the highest melting point?
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Answer:
Explanation:
They are Covalent networks solids
Sam is about to drop a golf ball from his hand.
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Get ready, you should catch it.
Answer:
As an object falls, its gravitational potential energy decreases as its speed—and therefore its kinetic energy—increases.
Explanation:
Study Island
pls help me balance this equation
C8 H18 + O2 CO2 + H2O
Answers
Answer:
2C8H18 + 25O2 → 16CO2 + 18H2O
Explanation:
Reactant
There are 16 Carbon 2x8 = 16
36 Hydrogen 2x18 = 36
And 50 oxygen 25x2= 50
Product
There are 16 carbon
And 50 oxygen atoms
From the CO2 the amount of oxygen atoms are 32 (16x2=32)
And from the H20 the amount of oxygen atoms are 18
32+ 18= 50
There are 36 hydrogen 18x2= 36
Look at the numbers of atoms in the reactant and the product we will see we have the same amount for each atom
Balancing a chemical equation we need to make the reactant and product equal and balanced
I wish this helped
what is hydraulic pressure?
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A cube of butter weights 0260lb and has a voluse of 1303mI. Express the density in grams per minhider to three significant figures. Part C A gom heys a mass of 600 g. When the gem is placed in a grafuased cylinder containing a o00 Express the density in grams per millititer to three significant figures.
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3 g/mL is the density in grams per millititer to three significant figures.
To express the density of a cube of butter in grams per milliliter, we need to convert the weight from pounds to grams and the volume from cubic inches to milliliters.
1 pound is approximately equal to 453.592 grams, so the weight of the cube of butter in grams would be:
0.260 lb * 453.592 g/lb = 117.81992 g (rounded to three significant figures as 118 g)
1 cubic inch is equal to approximately 16.387 milliliters, so the volume of the cube of butter in milliliters would be:
\(1303 cubic inches * 16.387 mL/in^3 = 21,365.861 mL\) (rounded to three significant figures as 21,400 mL)
Therefore, the density of the cube of butter would be:
Density = Mass / Volume
= 118 g / 21,400 mL
= 0.00551 g/mL (rounded to three significant figures as 0.005 g/mL)
For the gem, we already have the mass as 600 g and the volume as 200 mL.
Therefore, the density of the gem would be:
Density = Mass / Volume
= 600 g / 200 mL
= 3 g/mL (rounded to three significant figures)
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Write complete reaction mechanisms for formation of 1-bromobutane and also show how 1-butene and di-n-butyl ether are formed. 2. Why is it necessary to remove water before weighing the 1-bromobutane
Answers
The formation of 1-bromobutane involves the following reaction mechanism: 1. Nucleophilic substitution (SN2): Butanol reacts with a bromide ion (Br-) to form 1-bromobutane and a hydroxide ion (OH-). Butanol + Br- → 1-bromobutane + OH-
The formation of 1-butene and di-n-butyl ether are side reactions in this process:
1. Elimination (E2) reaction: Butanol undergoes an elimination reaction to form 1-butene and water.
Butanol → 1-butene + H2O
2. Williamson ether synthesis: Two butanol molecules react with each other in the presence of a base, forming di-n-butyl ether and water.
2 Butanol + Base → di-n-butyl ether + H2O + Base
It's necessary to remove water before weighing the 1-bromobutane because water could alter the measured weight, leading to inaccurate results. Water can also promote side reactions like the formation of di-n-butyl ether, which could further impact the yield and purity of the desired product, 1-bromobutane.
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for each element, indicate the number of valence electrons, core electrons, and unpaired electrons in the ground state. you may want to reference (page) section 6.9 while completing this problem.
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The number of valence electrons, core electrons, and unpaired electrons in the ground state varies for each element.
In the ground state, an atom's valence electrons are the electrons in its outermost energy level or shell. These electrons determine the atom's chemical properties and are involved in bonding. The number of valence electrons can be determined by looking at the group number of the element in the periodic table. For example, elements in Group 1 (such as hydrogen and lithium) have 1 valence electron, while elements in Group 2 (such as beryllium and magnesium) have 2 valence electrons.
Core electrons, on the other hand, are the electrons that occupy the inner energy levels or shells of an atom. These electrons are not involved in bonding and are generally more tightly bound to the nucleus. The number of core electrons can be calculated by subtracting the number of valence electrons from the total number of electrons in the atom.
Unpaired electrons are the electrons in an atom's valence shell that are not paired with another electron. These unpaired electrons play a significant role in determining the atom's reactivity and ability to form chemical bonds. The number of unpaired electrons can be determined by examining the electron configuration of the element.
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how does neutralization reaction help in the remedy of our digestion disorder? clarify
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Answer:60
Explanation:
60 is 60 is 69 to the l the b i like eating j wek;gnl
In the modern system of classification, the three domains are Bacteria, Archaea, and _____________.
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The three domains are the Archaea, the Bacteria, and the Eukarya
Which of the following is most like an intermediate in a metabolic pathway? a. a tablespoon of nutmeg that will be used in a cake b. a pepperoni pizza coming out of the oven. c. a person waiting in a line to buy tickets d. a carrot that has been peeled and is waiting to be cut e. a long on fire that has been half burned f. a car up on jacks waiting to have its tired changed
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The correct answer is e. a log on fire that has been half burned.
In a metabolic pathway, intermediates are molecules that are produced and consumed during the various steps of the pathway. They are transient and serve as "middle products" in the overall process.
Similarly, a log on fire that has been half burned can be seen as an intermediate state in the process of combustion. It represents a partially completed step towards the final product, which would be a fully burned log.
Therefore, the correct option is e.
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various gases, including carbon dioxide, methane, and cfcs, are contributing to ____________ , which is the chief ____________ that is influencing global climate change.
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Various gases, including carbon dioxide, methane, and CFCs, are contributing to greenhouse gas emissions, which is the chief factor influencing global climate change.
Greenhouse gases (GHGs) are gases in the Earth's atmosphere that trap heat and contribute to the greenhouse effect. Among the most significant GHGs are carbon dioxide (CO2), methane (CH4), and chlorofluorocarbons (CFCs). These gases have the ability to absorb and re-emit infrared radiation, effectively trapping heat within the Earth's atmosphere. The accumulation of these gases leads to an enhanced greenhouse effect, resulting in global climate change.
Carbon dioxide is primarily generated by the burning of fossil fuels such as coal, oil, and natural gas. Methane is released during the production and transport of coal, oil, and natural gas, as well as from livestock and other agricultural practices. CFCs are synthetic compounds used in various industrial applications, including refrigeration and aerosol propellants. Although their production has been phased out due to their damaging effects on the ozone layer, CFCs have a significant global warming potential.
The increase in greenhouse gas emissions, particularly CO2, CH4, and CFCs, is causing a rise in global temperatures and altering the Earth's climate patterns. This phenomenon, known as global climate change or global warming.
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The formula for vitamin C is C6H6O6. Name the elements and the number of atoms of each element in one molecule of vitamin C.
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Hydrogen - 6 atoms
Oxygen - 6 atoms
How many grams of Na 2 SO 4 are required to make 4 moles of BaSO 4 ?
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Answer:
46×142.
tell me if it's wrong.
.............
The blood must keep moving round the body to keep the rate of diffusion high explains why
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Answer:
red blood cells and diffusion.
Explanation:
this process involves red blood cells and diffusion. Red Blood cells (RBCs) are a type of blood cell whose role is to transport oxygen from the lungs to the peripheral tissues of the body. Oxygen diffuses from the alveoli of the lungs in to the RBC's, where it binds to hemoglobin.
Diffusion is a very important process within the human body and is essential to the transport of molecules within a number of organs including the lungs, kidneys, stomach and eyes. The lungs process millions of tiny air sacs that are called alveoli, each of which are in close contact with capillaries.
2. 1 byte equals 8 bits, 1 kilobyte equals 1,024 bytes, and 1 byte equals 2 nibbles.
a. How many kilobytes is 36 nibbles?
b. How many bits is 48 nibbles?
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EASYYY!!!!!
What arguments could you use to convince these farmers to start using some organic farming practises?
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Answer:
- It's the right thing to do, duh
- In the long run, it will save their industry
- It might be cheaper
- It might become law soon, so they might as well get with it
I can't think of anything else, I hope it helps anyway!
Which statements are part of the safety protocol for this lab experiment? Check all that apply.
Behaviour in the lab needs to be purposeful. Exercise caution when using the hot plate, as it can cause burns.
Ice used in this lab can melt quickly. Be sure to insulate your containers.
Label your glassware and paper cups clearly and appropriately. Many chemicals appear to be the same.
Check glassware, such as beakers and test tubes, for cracks and chips prior to use.
A fume hood should be used to collect any potentially harmful vapors.
Wear the right gear, such as chemically resistant gloves and oven mitts, when performing the experiment.
Remember, Teacher asked me to find correct answers by lab to get prepared.
Answers
The correct answers from the task given above which are true about part of the safety protocol for this lab experiment are as follows:
Behaviour in the lab needs to be purposefulExercise caution when using the hot plate, as it can cause burns.Ice used in this lab can melt quickly. Be sure to insulate your containersLabel your glassware and paper cups clearly and appropriately. Many chemicals appear to be the same.Check glassware, such as beakers and test tubes, for cracks and chips prior to useWear the right gear, such as chemically resistant gloves and oven mitts, when performing the experiment.What is meant by laboratory safety protocols?Safety protocols in the scientific laboratory are those safety measures and precautions which are usually adviced to be taken to ensure one's well being and protection from danger.
From the problem given above, It is very important to always label correctly the species of reagents or any glassware used in the laboratory.
In conclusion, we can now confirm from all the explanations above that it is very expedient that we observe all safety measures while performing experiment in the laboratory.
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Answer:
here ya go- I made the mistake of believing the person whose answer is above me.
Explanation:
Which element is likely to react violently with water?
a) carbon
b) beryllium
c) cesium
d) sulfur
Answers
I think the answer is beryllium.
because it's not sulfur or carbon and probably not cesium
Which fossil fuel is causing the most pollution? PLEASE HELP TIS ASSIGNMENT IS PAST DUE I NEED HELP
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Answer:
Coal is the fossil fuel causing the most pollution.
Explanation:
I hope this helps.
Why is there such a large jump and ionization energy between the second and third ionization energy‘s for magnesium?
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How many grams of CO2 will dissolve in 580. g water at 60.°C?
Answers
Answer:
128gCaCl2 per 200gH2O
Explanation:
I might be wrong rlly srry if I am:/ Hope this helps doe have a wonderful day
Potassium chlorate (KCIO_3) oxidizes sucrose (C_12H_22O_11) according to the following unbalanced reaction. What are the coefficients in the balanced chemical equation in the order in which it is written?KCIO_3(s)+ C_12H_22O_11(s) --> KC1(s) + CO_2(g) H_20(l)a. 4, 1, 4, 12, 11b. 4, 1, 4, 12, 22c. 2, 1, 2, 12, 11d. 8, 1, 8, 12, 11e. 8, 2, 8, 12, 11
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8 KClO3 + C12H22O11 -------> 8 KCl + 12 CO2 + 11 H2O is the balanced chemical equation. d) 8, 1, 8, 12, 11 are the coefficients in the balanced chemical equation in the order in which it is written.
What is balanced chemical reaction ?
A chemical equation is said to be balanced if the quantity of each type of atom in the reaction is the same on both the reactant and product sides.
In a balanced chemical equation, the mass and the change are both equal.
A chemical equation must balance according to the rule of conservation of mass.
According to the rule, mass cannot be generated or removed during a chemical process.
Chemical equations need to be appropriately balanced because of this.
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Identify the parts of the nervous system.
A: nervous system
B: nervous system
Answers
Answer:
answers
A -- central
B--- peripheral
Explanation:
hope this helps!
Answer:
A -- centralB--- peripheral
Explanation: