What is the definition of temperature?
*
1 point
Gas particles are in constant random motion.
Gas particles do not attract or repel one another.
Collisions are perfectly elastic.
Average kinetic energy of the gas particles.
Collisions between gas particles and the walls of a container.
The space between gas particles is larger than in other phases.
Answers
Answer:
Average kinetic energy of the gas particles.
Explanation:
Temperature is a measure of the average kinetic energy of the gas particles.
Related Questions
assuming the octet rule is obeyed how many covalent bonds will a nitrogen atom form to give a formal charge of zero
Answers
Answer:
3
Explanation:
In a nitrogen atom, since the no, of electrons is equal to its no. of protons, it has 7 electrons.
The electron configuration is 2, 5. (the first shell can only hold 2 electrons)
In each covalent bond, 2 electrons are shared between 2 atoms. usually, both atom contribute one electron. (unless it's dative covalent bond, which is not important at this point).
To obey octet rule, the outermost electron shell must have 8 electrons. Which means, the nitrogen atom need 3 more electrons to achieve that.
So with 3 covalent bonds, the nitrogen can get share 3 of its electrons, and obtain 3 more from the other atom(s). It won't lose electrons because covalent bonds exist between shared electrons, unlike ionic bonds.
22.55 mL of an H2SO4 solution
were titrated with 14.85 mL of a
0.146 M NaOH solution to reach the
equivalence point. What is the
molarity of the H2SO4 solution?
Answers
The concentration of H₂SO₄ solution is equal to 0.0480 M.
What is a neutralization reaction?A neutralization reaction is described as a chemical reaction where acid and base react to produce respective salt and water. When a strong acid reacts with a strong base then the salt can be neutral.
When H₂SO₄ (a strong acid) reacts with NaOH, the resulting salt is Na₂SO₃ and water.
H₂SO₄ + 2 NaOH → Na₂SO₄ + 2H₂O
Given, the concentration of NaOH = 0.146 M
The volume of the NaOH = 14.85 ml = 0.01485 L
The number of moles of NaOH, n = M × V = 0.146 × 0.01485 = 0.00216 M
The volume of the H₂SO₄ = 22.55 ml = 0.02255 L
The number of moles of H₂SO₄, n = 0.00216/2 = 0.00108 mol
The concentration of H₂SO₄ =0.00108/0.02255 = 0.0480 M
Therefore, the molarity of H₂SO₄ is 0.0480 M.
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U Activity 2. Lights On, Lights Off Write On if the process pertains to light-dependent reaction and writes OFF if the process pertains to the light-independent reaction. Write your answer on a separate sheet of paper.
1. It is also known as the dark reaction of photosynthesis.
2. Primary acceptor of carbon is Photosystem I and II.
3. Site of the process is in the stroma. 4. Photolysis of water does not occur.
5. Process type is both cyclic and non-cyclic processes.
6. It is a release of oxygen that gives off aldehydes and hydrogen upon dehydrogenation
7. It is a process that converts solar energy into chemical energy.
8. It is a light dependent process.
9. Process type is cyclic only,
10. Primary acceptor of carbon is Rubiscobisphosphate.
Answers
1. It is also known as the dark reaction of photosynthesis: Off.
A dark reaction of photosynthesis takes place outside of the thylakoids and do not require light to proceed, so it is a light-independent reaction.2. Primary acceptor of carbon is Photosystem I and II: On.
Photosystem I (P700) and Photosystem II (P680) are large membrane protein complexes that accepts carbon during a light-dependent reaction.3. Site of the process is in the stroma: Off.
The stroma is the site for series of biochemical redox reactions called Calvin cycle, which is a light-independent reaction.4. Photolysis of water does not occur: Off.
Since the photolysis of water doesn't occur, the reaction is a light-independent reaction.5. Process type is both cyclic and non-cyclic processes: On.
A non-cyclic processes forms ATP, so it is a light-dependent reaction.6. It is a release of oxygen that gives off aldehydes and hydrogen upon dehydrogenation: On.
A light-dependent reaction causes a release of oxygen that gives off aldehydes.7. It is a process that converts solar energy into chemical energy: On.
The conversion of solar energy into chemical energy is typically a light-dependent reaction.8. It is a light dependent process: On.
A light-dependent reaction takes place in the presence of light.9. Process type is cyclic only: Off.
A cyclic process is a light-independent reaction because it doesn't require light.10. Primary acceptor of carbon is Rubiscobisphosphate: Off.
When Rubiscobisphosphate is the primary acceptor of carbon, the reaction is a light-independent reaction.Read more: https://brainly.com/question/12827458
If you 0.123 moles of CO2 is placed at 300.1 K and 2.91 atm pressure. Determine its volume.
show with work
Answers
Answer:
1.04 L
Explanation:
write a balanced chemical equation for the decomposition of asprin
Answers
The balanced chemical equation for the decomposition of aspirin (acetylsalicylic acid) is:
\(2C_{9}H_{8}O_{4} (aspirin) → 2C_{7}H_{6}O_{3} (salicylic acid) + 2CO_{2} (Carbon dioxide) + H_{2}O (water)\)
In this reaction, the aspirin molecule breaks down into salicylic acid, carbon dioxide, and water. The reaction is typically catalyzed by heat or exposure to acidic or basic conditions.
Aspirin, or acetylsalicylic acid, contains ester functional groups that can undergo hydrolysis. Under suitable conditions, the ester bond in aspirin is cleaved, leading to the formation of salicylic acid, which is the primary decomposition product. Additionally, carbon dioxide and water are released as byproducts of the reaction.
The balanced equation shows that for every two molecules of aspirin, two molecules of salicylic acid, two molecules of carbon dioxide, and one molecule of water are formed. Understanding the decomposition of aspirin is important in pharmaceutical and chemical industries to ensure the stability and shelf-life of the compound, as well as to study its breakdown products and potential side reactions.
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2.
1 point(s)
Which of the following pairs of solutions forms/form a buffer when equal volumes are mixed?
Answers
Explanation:
it should be 2:1 that is acid and base combination to the form either acid or base and its conjugate
The temperature inside my refrigerator is about 40 Celsius. That temperature in Kelvin is K.
I place a balloon in my fridge that initially has a temperature of 220 C. This is K.
If the original volume of the balloon is 0.5 liters, what will be the volume of the balloon when it is fully cooled by my refrigerator? liters. (Round to two decimal places)
Answers
The volume of the balloon when it is fully cooled by my refrigerator will be 0.32L.
How to calculate volume?The volume of a substance can be calculated using the following expression;
Va/Ta = Vb/Tb
Where;
Ta and Va = initial temperature and volumeTb and Vb = final temperature and volumeAccording to this question, a balloon is placed in a fridge that initially has a temperature of 220°C. The final volume will be;
0.5/493 = Vb/313
0.0010142 × 313 = Vb
Vb = 0.32 L
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1. HF (aq) = H+ (aq) + F- (aq)
K 6.8 x 10-4
-
II. H₂C₂O4 (aq) = 2H+ (aq) + C₂0²-
K = 3.8 x 10-6
What is the K value for the
reaction below?
2HF (aq) + C₂02 (aq) =
2F (aq) + H₂C₂O4 (aq)
[?]
K = [?] x 10¹
Answers
Remember:
when you double moles: square the equilibrium constant
when you half the moles: Square root the equilibrium constant
when you reverse a reaction: take the reciprocal of the equilibrium constant
PLEASE HELP!!!
How many calories are in 4,180 joules?
Answers
Answer:
To convert joules to calories, you can use the conversion factor:
1 calorie = 4.184 joules
To find out how many calories are in 4,180 joules, divide the given value by the conversion factor:
4,180 joules / 4.184 joules per calorie = 0.9 calories (approximately)
Therefore, there are approximately 0.9 calories in 4,180 joules.
does anyone know the answer to this
Answers
Write the equation for the equilibrium constant (K) of the reaction studied in this exercise.
2C04 2- (ag) + 2Ht (ag) = CI20, 2- (ag) + H20(1)
Answers
The equation for the equilibrium constant (K) of the reaction studied in this exercise can be written as follows: K = ([\(CI_20\), 2-] * [\(H_20\)(1)]) / ([\(C0_4^ 2\)-] * [Ht])
In this equation, the concentrations of the species involved in the reaction are represented by the square brackets [ ]. The subscripts indicate the stoichiometric coefficients of each species in the balanced chemical equation.
The reaction being studied involves the following species:
\(C0_4^ 2\)- (ag) + 2Ht (ag) = \(CI_20\), 2- (ag) + \(H_20\)(1)
In the equilibrium constant expression, the concentration of \(CI_20\), 2- is multiplied by the concentration of \(H_20\)(1) and divided by the product of the concentrations of \(C0_4^ 2\)- and Ht. The stoichiometric coefficients in the balanced equation are used as exponents for the concentrations of the respective species.
It is important to note that the concentrations used in the equilibrium constant expression should be in molar units (mol/L) or expressed as partial pressures for gases.
Additionally, the equilibrium constant is specific to a given temperature, and its value provides information about the relative amounts of reactants and products at equilibrium.
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which of the following is a compound?
A) sugar B) salt C)Air D) oxygen
Answers
1. The type of bond most likely to
occur between Mg and Br is a(n)
bond.
---
Answers
Answer:
Ionic bond.
Explanation:
Group 7 elements like Bromine (Br) and group 2 elements like Magnesium,(Mg) involved loss and gain of electrons which is typical with Ionic bonding.
A
Strong intermolecular forces are a
property associated with
compounds.
A)inorganic
B)organic
Answers
Strong intermolecular forces are a property associated with inorganic compounds
Intermolecular forces determine bulk properties such as the melting points of solid and the boiling points of liquids and inorganic compounds on the other hand tends to have strong intermolecular forces such as hydrogen thus they have higher viscosity and organic compound have relatively high melting and boiling point when compared to inorganic compound that generally have a low melting and boiling points
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a wooden block with a mass of 2.0kg starts from at the top of an inclined plane and ends with a force of 25N at the bottom what was the rate of acceleration of the block
Answers
Answer:
Force F = 20N .
Mass m = 2.0 kg
Initial velocity u = 0
acceleration, a = 10m/s
2
t = 1 sec.
Now Refer to the attachment, See the free body diagram of the block.
Force works on the block:-
Weight, W = mg
W = 2 × 10
W = 20N (which is Downward)
Normal force N = mg cos37
N = 20 × 0.80
N = 16 N. (perpendicular & upward to the plane )
Here Applied Force, P = 20N (which is down along the plane)
Now For Final Speed, We know the formula:-
v = u + at
v = 0 + 10 × 1
v = 10 m/s
the Distance travelled s = ut + 0.5 at×t
s = 0 + 0.5 ×10×1×1
s = 5 m.
Now,
(a) So work done by the force of gravity in 1 sec. = F × d
⇒20 N × 5m
⇒100 J.
(b) Here the weight act as downward, so distance travelled in downward.
⇒5 × sin37
⇒5 × 0.6
⇒3 m.
so work done by gravity,
⇒20 N × 3 m
⇒60 J.
(c) Now, work done by all the forces
⇒change in Kinetic energy
⇒
2
1 m(v2
−u 2
)
⇒0.5×2.0×(10 2
−0 2 )
⇒ 100 J.
⇒W.D by frictional force
= work was done by all forces -( work was done by Normal force + work done by applied force + work done by gravity )
= 100 J - (100 + 60 +0 )
= 100 - 1
Hope this helps you≅
4)
If atom A bonds with atom B covalently, and atom A attracts electrons with
greater force, which of the following will be true?
O Atom A will have a greater share of electrons and will have a
slight positive charge.
Atom A will take all of the electrons and have a slight positive
charge.
Atom A will have a greater share of electrons and will have a
slight negative charge.
Atom B will lose its valence electrons and have a slight negative
charge.
с
Answers
Atom A will have a greater share of electrons and will have a slight negative charge according to Polar Covalent bond
What is Polar Covalent Bond ?
A specific type of covalent link is known as a polar bond. It is also the point at which an ionic bond and a pure covalent bond begin to form, according to another definition. A polar covalent bond, on the other hand, is a link that exists between two atoms and is made up of electrons that are scattered unevenly if we want to define it more precisely. The molecules have a tendency to have an electrical dipole moment in which the two ends are slightly positive or negative as a result of this state.
The many forms of covalent bonding are mostly determined by the electronegativity of the material. The propensity of an atom to draw a shared pair of electrons to itself is known as electronegativity. It is a trend and has no units. Polar covalent bonds are those created between two atoms in molecules with an electronegative difference.
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Can someone please help me please?
Answers
Answer:
b
Explanation:
A music store manager counted the number of people who came into their store on Tuesday and divided them into groups of people younger than 20, 20 to 40, and older than 40. Which type of graph would be the best to use in order to display the data?
Answers
The type of graph that will be to display the data collected by the store keeper is bar graph.
What is bar graph?A bar graph can be defined as a chart or a graphical representation of data, quantities or numbers using bars or strips.
Also, a bar graph is a graph that shows complete data with rectangular bars and the heights of bars are proportional to the values that they represent.
Three bar graphs can be used to display the data collected by the store keeper.
First bar graph = people younger than 20Second bar graph = 20 to 40 yearsThird bar graph = people older than 40.Thus, the type of graph that will be to display the data collected by the store keeper is bar graph.
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Explain why the following picture illustrates the relationships between voltage, current and resistance. (hint: start with Ohm's Law)
Answers
Answer:
Explanation:
We can see that this picture can be used to show Ohm's Law graphically so it illustrates Ohm's Law.
According to Ohm's Law electric current is directly proportional to voltage and inversely proportional to resistance.
Mathematically, V ∝ I,
or V=IR,
where, V ⇒ voltage difference between two points,
I ⇒ current flowing through the resistance,
R ⇒ proportionality constant or resistance.
According to the picture voltage ( SI unit Volt ) is supporting the current ( SI unit Ampier ) to move out from the barrier while the resistor ( SI unit Ohm )is acting as a barrier to its way . As it is satisfying the Ohm's Law it illustrates the relationship between voltage, current, and resistance.
The Skeletal System does all of the following except:
Produces Blood Cells
Protects Organs
Stores calcium and minerals
Excretes Waste
Answers
The skeletal system does not excrete waste. Therefore, option D is correct.
What is the skeletal system ?The skeletal system is our body's central framework. It is also known as the musculoskeletal system. The skeletal system consists of bones and tendons, and ligaments, connective tissue, including cartilage.
The skeletal system plays an important role in support and protection for the body's internal organs and gives the muscles a point of attachment.
Our circulatory system delivers oxygen-rich blood to your bones. Our skeletal system is depend on our urinary system to remove waste produced by bone cells. The bones of your skeleton create a structure that protects our urinary bladder. Our circulatory system delivers oxygen-rich blood to your bones.
Thus, option D is correct.
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Which describes bedrock?
consists of solid rock
lies directly above the soil layer
does not contain weathered rock
forms from decomposed material
Answers
Answer:
1.Consists of solid rock
Explanation:
Answer:
The answer would be A. Consists of solid rock
How could the age be interpreted in a rock in which the blocking temperature has been reached?
Answers
Oxygen and hydrogen form the polyatomic hydroxide ion. What is its charge?
Answers
Answer:
negative
the chage on hydroxide ions os negative
How many pi bonds are in the oxalate ion (C2O42-)?
Answers
Answer:there are 13
Explanation:
There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. Therefore, there are 2 pi bonds in oxalate ion C\(_2\)O\(_4\)²⁻.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds. There are total 2 pi bonds in oxalate ion C\(_2\)O\(_4\)²⁻.
Therefore, there are 2 pi bonds in oxalate ion C\(_2\)O\(_4\)²⁻.
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How many milliliters of 0.100M NaOH are required to neutralize the following solution 5.00mL of.0500M HCI
Answers
1) Set the chemical equation
\(\text{NaOH + HCl = NaCl + H}_2O\)2) Find out how many moles of HCl react in the solution.
\(\text{moles of HCl = }\frac{0.0500\text{ M}}{\square}\cdot\frac{5.00\text{ mL}}{\square}\cdot\frac{1\text{ L}}{1000\text{ mL}}=\text{ 0.00025 moles of HCl}\)3) Find out how many moles of NaOH reacted with HCl
\(\text{moles of NaOH = }\frac{0.00025\text{ moles of HCl}}{\square}\cdot\frac{1\text{ mole of NaOH}}{1\text{ mole of HCl}}=\text{ 0.00025 moles of NaOH}\)4) Find out the milliliters of NaOH
\(mL\text{ of NaOH = }\frac{0.00025\text{ moles of NaOH}}{0.100\text{ M}}\cdot\frac{1000\text{ mL}}{1\text{ L}}\text{= 2.50 mL}\)Aqueous sodium hydroxide reacts with nitric acid according to the following equation. From this it can be deduced that 114 kJ of energy would be released when
1 mol NaOH reacts with 2 mol nitric acid
2 mol NaOH reacts with 1 mol nitric acid
2 mol NaOH reacts with 2 mol nitric acid
3 mol NaOH reacts with 2 mol nitric acid
Answers
Aqueous sodium hydroxide reacts with nitric acid according to the following equation. From the reaction it can be deduced that 114 kJ of energy would be released when 1 mol NaOH reacts with 2 mol nitric acid.
What do you know about nitric acid?
Nitric acid (HNO3) is an odorless liquid that gives out yellow or red odors. Nitric acid exposure can irritate the eyes, skin, and mucous membranes. It can also lead to dental erosion, delayed pulmonary edema, pneumonitis, and bronchitis. The acid nitric is quite corrosive.
A nitrogen oxoacid with the formula HNO3 is nitric acid, in which the nitrogen atom is linked to a hydroxyl group and the other two oxygen atoms by analogous bonds. It serves as a reagent and a protic solvent. It is a nitrate's conjugate acid.
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Solid lithium metal and diatomic nitrogen gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction.
Indicate the phases using abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively.
Answers
Solid lithium reacts with dinitrogen giving lithium nitride. Where three electrons from lithium is transferred to nitrogen. The balanced chemical equation is given below:
\(\rm 6 Li (s) + N_{2} (g) \rightarrow 2 Li_{3}N (s)\)
What is lithium nitride?Lithium nitride is a brownish-red colored powder compound formed by the ionic bonding between lithium and nitrogen. Lithium is an alkali metal with 3 electrons with one valence electron.
Nitrogen is a non-metal with 5 valence electron and it needs 3 more electrons to achieve octet. Thus, lithium gives its valence electron to nitrogen. One nitrogen needs 3 electrons thus two nitrogen needs total 6 electrons. Thus two nitrogen atoms bonds with 6 Li atoms as written in the balanced reaction.
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What is the concentration in % (v/v) of 175 mL of isopropyl alcohol that is
diluted with water to a total volume of 275
Answers
Answer:
40/220 ×100=18.6 is all I got I know that by heart so um yea
Explanation:
CC Energy and Matter Interpret the equation for the formation of water from its elements in terms of numbers of molecules, moles, and volumes of gases at STP.
2H2(g) + 02(g) - 2H20(g)
Answers
2 moles of water produces from 2 moles of hydrogen and 1 moles of oxygen. 2 molecules of water produces from 2 molecules of hydrogen and 1 molecules of oxygen. 2 liters of water produces from 2 liters of hydrogen and 1 liter of oxygen
Water is a substance that exists in gaseous, liquid, & solid phases and is made up of chemical components such as hydrogen and oxygen. Of the most prevalent and necessary substances is it. a liquid that is flavourless and odourless at normal temperature.
It has the critical capacity to dissolve a wide variety of other compounds. In fact, living things depend on water's adaptability as a solvent. It is thought that life first appeared in the water-based solutions of the oceans of the earth.
2H\(_2\)(g) + 0\(_2\)(g) → 2H\(_2\)O(g)
2 moles of water produces from 2 moles of hydrogen and 1 moles of oxygen
2 molecules of water produces from 2 molecules of hydrogen and 1 molecules of oxygen
2 liters of water produces from 2 liters of hydrogen and 1 liter of oxygen
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Classify each of the following substances as an element, a compound, or a mixture.
Silver, Ag and fluorine, F, carbon monoxide, CO and calcium chloride, Ca Cl2, soft drink
Drag the appropriate items to their respective bins.
Answers
A mixture is a physical combination of two or more compounds that retain their identities.
What is mixture?A mixture in chemistry is a substance composed of two or more chemical components which are not chemically connected. A mixture is a physical combination of two or more compounds that retain their identities and therefore are mixed as solutions, suspensions, as well as colloids.
Silver element
Ag and fluorine mixture
F element
carbon monoxide compound
CO and calcium chloride mixture
CaCl\(_2\) compound
soft drink mixture
Therefore, a mixture is a physical combination of two or more compounds that retain their identities.
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