Use the collision theory to explain how increasing the temperature of a reaction will affect the rate of the reaction.

Answers

Answer 1

Answer:

Explanation:

Reaction rate is a measure of the speed of a chemical reaction. There are many theories that have been put forward to explain reaction rates. One of which is the collision theory.

The collision theory postulates that for a reaction to occur, there must be collisions between reacting particles. This implies that the number of successful or effective collision of particles determines the rate of a chemical reaction. For a collision to be successful, the particles must be properly oriented and equiped with adequate energy for the reaction.

One of the key component of the energy required for effective collision is temeperature. The  number of effective collision and consequently the rate of chemical reactions are directly proportional to the temperature at which the reaction occurs. With increasing temperature, the activation energy becomes activated and the number of collision increases.


Related Questions

Describe the redox reaction. Check all that apply 2AI(s) + 3ZnCI2(g) → 3Zn(s) + 2AICI3(aq).
Aluminum atoms transfer electrons to chlorine atoms.

Zinc is reduced.

Zinc is the reducing agent.

The oxidation number of chlorine does not change.

Aluminum is oxidized.

Answers

Answer:

Zinc is reduced.

The oxidation number of chlorine does not change.

Aluminum is oxidized.

Explanation:

For the reaction:

2AI(s) + 3ZnCI₂(g) → 3Zn(s) + 2AICI₃(aq).

For the elements in the reactants side:

Al has (0) oxidation state and converted to (+3) oxidation state in the products (AlCl₃), which means Al is oxidized and it is the reducing agent.

So, we can check that: Aluminum is oxidized.

Zn has the oxidation state (+2) in the reactants side (ZnCl₂) and converted to (0) in the products side (Zn), which means that Zn is reduced and it is the oxidizing agent.

So, we can check that: Zinc is reduced.

and can not check: Zinc is the reducing agent.  

The oxidation state of Cl does not change, it is the same in both sides (-1).

So, we can check: The oxidation number of chlorine does not change.

and can not check: Aluminum atoms transfer electrons to chlorine atoms.

So, the choices will be:

Zinc is reduced.

The oxidation number of chlorine does not change.

Aluminum is oxidized.

Answer: B, D,E

Explanation:

Is burning of wood a reversible or irreversible change

Answers

Answer:

can you reverse the ashes back into wood? If you can't then it is irreversible

Water striders are insects that have the ability to walk across the surface of water. Which properties of water allow the water strider to do this? Choose 2 answers: Choose 2 answers: (Choice A) A Surface tension (Choice B) B Adhesion (Choice C) C Specific heat (Choice D) D Capillary action

Answers

The properties of water that enables the water striders to walk across the surface of water is surface tension and adhesion.

Surface tension is a force that acts on the surface of water that makes it behave as if it is a stretched elastic skin. The ability of water molecules to stick to other surfaces is called adhesion.

As a result of surface tension and adhesion, insects such as  water striders are able to walk across the surface of water.

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Where are the products in a chemical equation located



A On the left side of the snow in the equation
. On the night wide of the arrow in the equation
C. Between the reactants of the chemical equation
. At the beginning of the chemical equation
O
O

Answers

Answer:

the answer is B

Explanation:

reactants are on the left because they are the ones reacting. products are on the right because they are the final products.

You have a 15.0 gram sample of gold at 20.0°C. How much heat does it take to raise the temperature to 100.0°C?

Answers

Answer:

=154.8 J

Explanation:

Change in enthalpy = MC∅ where M is the mass of the substance, C is the specific heat capacity and ∅ is the change in temperature.

Change in temperature = 100.0°C-20.0°C=80°C

ΔH=MC∅

The specific heat capacity of gold= 0.129 J/g°C

ΔH= 15.0g×0.129J/g°C×80°C

=154.8 J

To raise the temperature of a 15.0 gram sample of gold from 20.0°C to 100.0°C, approximately 154.8 joules of heat energy is required, using the formula q = mcΔT where c is the specific heat capacity of gold.

To calculate the heat needed to raise the temperature of gold, you can use the formula:

Q = mcΔT

Where Q is the heat, m is the mass of the gold, c is the specific heat capacity of gold, and ΔT is the change in temperature.

Calculate the change in temperature: ΔT = 100.0°C - 20.0°C = 80.0°C

Look up the specific heat capacity of gold, which is 0.129 J/g°C

Substitute the values into the formula: Q = 15.0g × 0.129 J/g°C × 80.0°C = 154.8 J

Jason combines the two intermediate steps shown.
Na(g)+O2(g) ->2NO(g)
2NO(g)+O2(g) 2NO2(g)
Which best describes what Jason should do with the oxygen molecules?
Place two of them as products.
Place two of them as reactants.
Cancel them out because there is one in each equation.
Double them because there is one in each equation.

Answers

Answer:

Place two of them as reactants.

Explanation:

We have the two steps of reactions:

1) N₂(g ) + O₂(g) → 2NO(g).

2) 2NO(g )+ O₂(g) → 2NO₂(g).

Adding the two equation with cancelling the intermediate (NO), we get:

N₂(g ) + 2O₂(g) → 2NO₂(g).

NO is cancelled out because there is one in each equation in the products side in eq. 1 and in oriduct side in eq. 2.

So, we place two of oxygen as reactants.

Answer:

Place two of them as reactants

Explanation:

The molar volume of a gas at STP, in liters, is

Answers

Answer: 22.4L

Gas at STP means gas at standard temperature and pressure of one mole of an ideal gas

Ideal gas Law PV=nRT

Standard pressure is 1atm or 22.4L

Standard temperature is 273.15K

Any questions feel free to ask. Thanks





Blood serum is typically about 0.0044 M in K+ (aq). Calculate the mass of the potassium ions in 4,785. mL of blood serum. The molar mass of potassium is 39.10 g/mol

Answers

Answer:

0.823 g.

Explanation:

Molarity (M) is defined as the no. of moles of solute dissolved in a 1.0 L of the solution.

M = (no. of moles of K⁺)/(Volume of the solution (L).

∵ no. of moles of K⁺ = (mass/molar mass) of K⁺.

∴ M = (mass/molar mass) of K⁺/(Volume of the solution (L).

M = 0.0044 M.

Volume of the solution = 4785.0 mL = 4.785 L.

mass of K⁺ = ??? g.

molar mass of K⁺ = 39.01 g/mol.

∴ mass of K⁺ = (M)((molar mass of K⁺)(volume of the solution (L)) = (0.0044 M)(39.10 g/mol)(4.785 L) = 0.823 g.

which of the following is described by the equation H2O(s)+ heat=H2O(I)
A Freezing
Melting
Condensing
Evaporating

Answers

Answer: Melting

Explanation: Just confirming the other answer

This equation described is of Melting.

What is melting?Melting is the change of a solid into a liquid when heat is applied to the substance.

How solid changes to liquid in heating? Application of heat to the molecules of a solid , speed up the motion and molecules overcomes the attractions and move past each other as a liquid.

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Which of the following elements would you expect to have the lowest ionization energy value? Fluorine, lithium, neon, nitrogen

Answers

Answer:

Lithium (Li)

Explanation:

Lithium had the lowest ionization energy value because it has a low effective nuclear charge and a large radius

Answer:

lithium

Explanation:

Express the following number in scientific notation.
0.026890 =

Answers

To express 0.026890 in scientific notation, it is written as 2.6890 x [tex]10^{-2}[/tex].

Express the following number in scientific notation:

0.026890 = 2.6890 x [tex]10^{-2}[/tex]

Scientific notation is a way to represent very large or very small numbers more concisely. It is written as a number between 1 and 10 multiplied by a power of 10.

How do you measure density​

Answers

Answer:

d = m / v

Explanation:

This is the formula for density. d stands for density. m stands for mass. lastly, v stands for volume. just divide the mass by the volume and boom, you've got the density of an object ^-^

D=m/v is the formula for destiny

“Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C.”

What topic is the teacher most likely talking about?

Answers

Answer:

Explanation:

Quick Answer: Likely fractional distillation.

The distillation taking place has heat that is not uniformly distributed. Hot air rises, so the temperature at the top is greated than at the bottom. When petroleum is distilled various organics come off at various temperatures and at different levels of distillery apparatus.

When the volume and number of particles of a gas are constant which of the following is also constant

Answers

It is the Avogadro's law which explains the relationship between the number of moles and the volume. When the volume and the number of moles are constant then the pressure and temperature are constant.

What is Avogadro's law?

The law states that equal volumes of all gases under the similar conditions of temperature and pressure contains equal number of molecules. The law can be mathematically expressed as:

V ∝ n

Here 'V' is the volume and 'n' is the number of moles.

It follows that the volume of a gas is directly proportional to the number of molecules. But the number of molecules (N) of a gas is directly proportional to the number of moles (n).

Thus when the volume and number of particles of a gas are constant then the pressure and temperature are also found to be constant.

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Which statement correctly identifies the nuclide that is most likely to be unstable and describes why?
a) Carbon-14 (14C) is likely an unstable nuclide because it has 8 neutrons and 6 protons, and the ideal neutron-to-proton ratio is 1:5.

b) Uranium-238 (238U) is likely an unstable nuclide because it has a neutron-to-proton ratio that is 1.6:1 and the ideal neutron-to-proton ratio is 1:1.

c) Carbon-14 (14C) is likely an unstable nuclide because it has 8 neutrons and 6 protons, and the ideal neutron-to-proton ratio is 1:2.

d) Uranium-238 (238U) is likely an unstable nuclide because it has a neutron-to-proton ratio that is 1.6:1 and the ideal neutron-to-proton ratio is 1:2.

Answers

the answer would be B.

U-238 has a n to p ration of 1.6:1. 146 neutrons and 92 protons.

It is actually the most commonly used isotope is reactors.

C-14 is also a radioactive isotope with 8 neutrons and 6 protons.

The usual and ideal n to p ratio is 1:1 such as C-12 or Mg-24

How much heat, in joules and in calories, is required to heat a 28.4-g (1-oz) ice cube from −23.0 °C to −1.0 °C?

Answers

See picture for explanation.

If you have any questions, let me know.

a. The quantity of heat in Joules is equal to 1,305.832 Joules.

b. The quantity of heat in Calories is equal to 312.10 Cal.

Given the following data:

Mass of ice cube = 28.4 gramsInitial temperature = -23.0°CFinal temperature = -1.0°C

Scientific data:

Specific heat capacity of ice = 2.09 J/g°C

To determine the quantity of heat in Joules:

Mathematically, quantity of heat is given by the formula;

[tex]Q=mc\theta[/tex]

Where:

Q represents the quantity of heat.m represents the mass of an object.c represents the specific heat capacity.∅ represents the change in temperature.

Substituting the given parameters into the formula, we have;

[tex]Q = 28.4 \times 2.09 \times (-1.0 -[-23.0])\\\\Q=59.356 \times (-1.0+23.0)\\\\Q=59.356 \times22[/tex]

Quantity of heat, Q = 1,305.832 Joules.

In Calories:

[tex]Calories =\frac{1305.832}{4.184}[/tex]

Calories = 312.10 Cal.

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The following questions A24 - A26 relate to 100 ml of 0.0150 M solution of benzoic acid
(C6H3COOH). Ka(C6H3COOH) = 6.4 x 10^-5.

What is the pH of the solution after the addition of 1 x 10^-3 moles of NaOH? You may assume no volume change to the solution upon addition of the NaOH.

Answers

Answer:

PH of the weak acid: approximately 2.513.

PH of the buffer solution: approximately 4.495.

Explanation:

The Ka value of benzoic acid is much smaller than 1. Benzoic acid will dissociate but only partially when dissolved in water. Construct a RICE table for this process. Let the equilibrium of [tex]\rm H^{+}[/tex] be [tex]x\; \rm mol\cdot L^{-1}[/tex]. Note that [tex]x \ge 0[/tex].

[tex]\displaystyle \begin{array}{c|ccccc}\textbf{R}&\mathrm{C_6H_5COOH} & \rightleftharpoons & \mathrm{C_6H_5COO^{-}} & + &\mathrm{H^{+}}\\\textbf{I} & 0.015 & & 0 & & 0\\\textbf{C} & -x & & +x & & +x\\\textbf{E} & 0.015-x & & x & & x\end{array}[/tex]

[tex]\displaystyle \frac{[\mathrm{C_6H_5COO^{-}}]\cdot [\mathrm{H^{+}}]}{[\mathrm{C_6H_5COOH}]} = \mathrm{pK}_{a}[/tex].

[tex]\displaystyle \frac{x^{2}}{0.015 - x} = 6.4\times 10^{-5}[/tex].

Solve this quadratic equation for [tex]x[/tex]:

[tex]x^{2}+ 6.4\times 10^{-5}\;x - 6.4\times 10^{-5}\times 0.150 = 0[/tex].

[tex]\displaystyle x = \frac{-6.4\times 10^{-5} \pm \sqrt{(6.4\times 10^{-5})^{2} - 4\times (- 6.4\times 10^{-5}\times 0.150)}}{2}[/tex].

Take only the non-negative root. [tex]x \approx 0.00306655[/tex].

[tex]\rm [H^{+}] = 0.00306655\; mol\cdot L^{-1}[/tex].

[tex]\displaystyle \mathrm{pH} = -\log_{10}{[\mathrm{H^{+}}]} = 2.513[/tex].

Each benzoic acid contains only one carboxyl group [tex]\mathrm{-COOH}[/tex]. Benzoic acid is thus a monoprotic acid. Each mole of the acid will react with only one mole of [tex]\rm NaOH[/tex]. The 100 mL solution initially contains [tex]1.50\times 10^{-3}[/tex] moles of benzoic acid. The [tex]1\times 10^{-3}[/tex] moles of [tex]\rm NaOH[/tex] will neutralize only part of the acid. The solution will eventually contain [tex]1\times 10^{-3}[/tex] moles of [tex]\mathrm{C_6H_5COO^{-}}[/tex] (from the salt [tex]\mathrm{C_6H_5COONa}[/tex]) and [tex]0.50\times 10^{-3}[/tex] moles of [tex]\mathrm{C_6H_3COOH}[/tex].

Both the acid [tex]\mathrm{C_6H_5COOH}[/tex] and the conjugate base of the acid [tex]\mathrm{C_6H_5COO^{-}}[/tex] exist in large amounts in the solution. Apply the Henderson-Hasselbalch equation for weak acid buffers to find the pH of this buffer solution.

[tex]\mathrm{pK}_{a} = -\log_{10}{\mathrm{K}_{a}} \approx 4.19382[/tex] for benzoic acid.

[tex]\begin{aligned}\mathrm{pH} &= \mathrm{pK}_{a} + \log{\frac{{[\text{Conjugate Base}]}}{[\text{Weak Acid}]}} \\ &= \mathrm{pK}_{a} + \log{\frac{{[\mathrm{C_6H_5COO^{-}}]}}{[\mathrm{C_6H_5COOH}]}}\\ &= 4.19382 + \log{\frac{0.01}{0.005}}\\ &\approx 4.495 \end{aligned}[/tex].

Which of the following lists the atmospheric layers in the correct order beginning at the Earth's surface?

Answers

Answer:Troposphere, Stratosphere, Mesosphere and Thermosphere

Explanation:

0.00781 g = kg
helppppp

Answers

Answer:  The answer is:  " 7.81 kg " .

___________________________________________________

Explanation:

___________________________________________________

Note the exact conversion:   1000 g = 1 kg ;

0.00781 g = ? kg :

So:  To convert "0.0781 g" ; to "units in kg" ;

            →  we multiply the value:  0.00781 g ;  by "1000" ;

So:  Given:  " 0.00781 g " ;  

           →  we move the decimal point "3 (three) spaces forward" ;

   to get:  " 7.81 kg " .

___________________________________________________

Hope this helps!

       Wishing you the best in your academic pursuits

              — and within the "Brainly" community!

___________________________________________________

Answer:

0.00000781kg

Explanation:

As an acid is added to neutral water the H will

Answers

Answer:

decrease

Explanation:

I assume you mean pH, the pH will decrease as there are more H+ ions inside the water

Answer:

dissolve i believe its been two years since i was in the class.

Explanation:

A solution is made by dissolving 19.5 grams of glucose (C6H12O6) in 0.245 kilograms of water. If the molal freezing point constant for water (Kf) is -1.86 °C/m, what is the resulting Δtf of the solution? Show all he steps taken to solve this problem.

Will make brainliest!!
20 points!!

Answers

Answer:

- 0.8217°C.

Explanation:

We can solve this problem using the relation:

ΔTf = Kf.m,

ΔTf is the depression in the freezing point.

Kf is the molal freezing point constant for water (Kf = -1.86 °C/m).

m is the molality of glucose.

We need to calculate the molality:

Molality (m) is the no. of moles of solute in 1.0 kg of solvent.

∴ m = (mass/molar mass) of glucose/(mass of water (kg))

∴ m = (19.5 g/180.156 g/mol)/(0.245 kg) = 0.4418 m.

∴ ΔTf = Kf.m = (-1.86 °C/m)(0.4418 m) = - 0.8217°C.

How many moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia?

Answers

Answer:

0.0116 mol.

Explanation:

Suppose that the reaction proceeds at STP conditions.

It is known that at STP: 1 mol of any gas occupies 22.4 L.

Using cross multiplication:

1 mol of NH₃ occupies → 22.4 L.

??? mol of NH₃ occupies → (520 mL) 0.52 L.

∴ The no. of moles of (520 mL) NH₃ produced = (1 mol)(0.52 L)/(22.4 L) = 0.0232 mol.

For the balanced reaction:

3H₂ + N₂ → 2NH₃.

3 mol of H₂ react with 1 mol of N₂ to produce 2 mol of NH₃.

Using cross multiplication:

1 mol of N₂ produce → 2 mol of NH₃, from stichiometry.

??? mol of N₂ produce → 0.0232 mol of NH₃.

∴ The no. of moles of N₂ needed = (1 mol)(0.0232 mol)/(2 mol) = 0.0116 mol.

Approximately 0.0116 moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia. This calculation is based on the balanced equation N₂ + 3 H₂ → 2 NH₃ and the molar volume of a gas at STP. It ensures that the stoichiometric ratio is maintained.

First, let's recall the balanced chemical equation for the synthesis of ammonia:

N₂ + 3 H₂ → 2 NH₃

According to the balanced equation, 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia. Given that volume and moles correlate under ideal conditions (at STP - Standard Temperature and Pressure), 1 mole of gas occupies 22.4 liters (or 22,400 mL). To find the moles of ammonia produced, we can use the given volume:

Number of moles of ammonia (NH₃) = Volume of NH₃ / Molar volume at STP

= 520 mL / 22400 mL/mol

= 0.0232 moles of NH₃

From the stoichiometry of the reaction, 2 moles of NH₃ are produced from 3 moles of H₂ and 1 mole of N₂. Therefore, we need to find out how many moles of nitrogen (N₂) are required to produce 0.0232 moles of NH₃. Using the mole ratio from the balanced equation:

(1 mole of N₂) / (2 moles of NH₃) = x moles of N₂ / 0.0232 moles of NH₃

x = 0.0232 / 2

= 0.0116 moles of N₂

Thus, approximately 0.0116 moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia.

Which of the following is an example of point-source pollution? A. Salt from roads B. Water from a sewage treatment plant C. Fertilizer from agricultural runoff D. Acid from abandoned mines

Answers

Answer:

Acid from abandoned mines- D.

Answer:

Water from a sewage treatment plant

Explanation:

Water from a sewage treatment plant is an example of point-source pollution.

The complete combustion of which of the following substances produces carbon dioxide and water?

NO

K2CO3

C8H18

CaHCO3

Answers

Answer:The correct answer is C8H18.

Explanation:

Answer:

C₈H₁₈

Explanation:

Octane is an alkane which which is combustible in air.

The combustion of octane C₈H₁₈ in sufficient supply of oxygen produces carbon (IV) Oxide and water only.

Sufficient supply of oxygen ensures there is complete combustion of octane.

2C₈H₁₈ ₍l₎ + 25O₂₍g₎ → 16CO₂₍g₎ + 18H₂O₍l₎

what is the mass in kg of 32500 g bag of sand

Answers

Answer:

32.5kg

Explanation:

if 1kg = 1000g,

then xkg=32500g

to convert, divide by 1000 32500/1000=32.5kg

What happens when an atom of sulfur combines with two atoms of chlorine to produce SCI2?
A.
Each chlorine atom shares a pair of electrons with the sulfur atom.
B.
An electron is transferred from each chlorine atom to the sulfur atom.
C.
An electron is transferred from the sulfur atom to each chlorine atom.
D.
Each chlorine atom shares all its valence electrons with the sulfur atom.

Answers

Answer:

A.) Each chlorine atom shares a pair of electrons with the sulfur atom.

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. The correct option is option A.

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. The melting and boiling points are higher in ionic compounds.

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.  SCI[tex]_2[/tex] is a covalent compound. During formation of SCI[tex]_2[/tex], each chlorine atom shares a pair of electrons with the sulfur atom.

Therefore, the correct option is option A.

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In which of the following is concentration expressed in percent by volume?
10% (v)
10% (m/m)
10% (m/v)
10% (v/v)

Answers

Answer:

Concentration expressed in percent by volume by volume is 10%(v/v).

Explanation:

w/w % or m/m% : The percentage mass or fraction of mass of the of solute present in total mass of the solution.

[tex]w/w\%=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100[/tex]

w/v % or m/v: The percentage of mass of the of solute present in total volume of the solution.

[tex]w/v\%=\frac{\text{Mass of solute}}{\text{Volume of solution}}\times 100[/tex]

v/v % : The percentage volume of the of solute present in total volumeof the solution.

[tex]v/v\%=\frac{\text{Volume of solute}}{\text{Volume of solution}}\times 100[/tex]

Concentration expressed in percent by volume by volume is 10%(v/v).

Final answer:

The concentration expressed in percent by volume is 10% (v/v). This denotes that 10% of the total volume of the solution is made up of a particular solute.

Explanation:

Concentration expressed in percent by volume is represented as 10% (v/v). This means that the percentage is derived from the ratio of the volume of the solute to the volume of the solution, and then multiplied by 100 to get the percentage. For instance, if you have a solution with 10ml of ethanol mixed with 90ml of water, the volume ratio of ethanol to the total solution is 10ml/100ml=0.1, and when multiplied by 100 we get a 10% (v/v) ethanol solution. It's reflected as 10% of the total volume of the solution is comprising of the solute (ethanol).

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plese HELP I AM NEW
On the basis of Bohr's model, the radius of the 3rd orbit
is -
(A) Equal to the radius of first orbit
(B) Three times the radius of first orbit
(C) Five times the radius of first orbit
(D) Nine time the radius of first orbit​

Answers

Answer:

[tex]\boxed{\text{(D) Nine times the radius of the first orbit}}[/tex]

Explanation:

On the basis of Bohr's model, the radius of the nth orbit is  

r = a₀n²  

where a₀ is a constant called the Bohr radius.  

r₃\r₁ = (a₀ × 3)²/(a₀ × 1)² = 9/1 = 9

The radius of the third Bohr orbit is nine times the radius of the first orbit.

Answer:

The correct answer is option D.

Explanation:

Formula used for the radius of the [tex]n^{th}[/tex] orbit will be,

[tex]r_n=\frac{n^2\times 52.9}{Z}[/tex]   (in pm)

where,

[tex]r_n[/tex] = radius of [tex]n^{th}[/tex] orbit

n = number of orbit

Z = atomic number

Radius of the first orbit, n = 1

[tex]r_1=\frac{1^2\times 52.9}{Z}=\frac{1\times 52.9}{Z}[/tex]..[1]

Radius of the third orbit, n = 3

[tex]r_3=\frac{3^2\times 52.9}{Z}=\frac{9\times 52.9}{Z}[/tex]..[2]

[1] ÷ [2]

[tex]\frac{r_1}{r_3}=\frac{\frac{1\times 52.9}{Z}}{\frac{9\times 52.9}{Z}}[/tex]

[tex]r_1\times 9=r_3[/tex]

The radius of the 3rd orbit  is nine times the radius of first orbit.

How is an endothermic reaction identified

Answers

Answer:

An endothermic reaction is identified by noting the drop in temperature in the system.

Explanation:

An endothermic reaction occurs by absorbing heat energy from the environment( apparatus and solution). Once the energy in the surrounding reduces the temperature drops. The energy absorbed is used to form new bonds. The energy absorbed is directly proportional to the temperature drop.

Answer:

An endothermic reaction absorbs heat from its surroundings.  

Explanation:

An example is the reaction of acetic acid with baking soda.

Three ways to tell if a reaction is endothermic:

Do the experiment. The system cools down, and you can use a thermometer or your hand to tell that the flask becomes colder .Heat will appear as a reactant in the chemical equation:CH₃COOH + NaHCO₃ + heat ⟶ CH₃COONa + H₂O + CO₂ The sign of ΔH is positive. N₂ + 2O₂ ⟶ 2NO₂ ; ΔH = +33.1 kJ·mol⁻¹

State Avogadro's Hypothesis.

Answers

Answer: Avogadro's Hypothesis simply states that all gases of equal volume have the same number of molecules.

Explanation: Avogadro's Hypothesis is an experimental gas law and it serves as a specific case of the ideal gas law. Mathematically,

Volume (V) is proportional to the Number of mole (n) of the gas

V/n = K

Where K is the constant of proportionality.

Final answer:

Avogadro's hypothesis states that equal volumes of gases contain the same number of particles. It is an important concept in the study of gases.

Explanation:

Avogadro's hypothesis states that equal volumes of gases, at the same temperature and pressure, contain the same number of particles. This hypothesis helps explain the concept of molar volume and is a fundamental principle in the study of gases. For example, 1 mole of any gas occupies the same volume as 1 mole of any other gas at the same temperature and pressure.

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