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Eddi Din [679]
3 years ago
13

Which is the correct rate law for the overall reaction

Chemistry
1 answer:
Leviafan [203]3 years ago
4 0

Answer:

The sum of each elementary step in a reaction mechanism must yield the overall reaction equation. The rate law of the rate determining step must agree with the experimentally determined law.

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How many oxygen atoms are present in 4.28 g of LiBroz sample?
Dafna11 [192]

Answer:

0.43×10²³ atoms

Explanation:

Given data:

Mass of LiBrO₂ = 4.28 g

Number of atoms of oxygen = ?

Solution:

Number of moles = mass/molar mass

Number of moles = 4.28 g/ 118.84 g/mol

Number of moles = 0.036 mol

We can see 1 mole of LiBrO₂ contain 2 mole of oxygen atm.

0.036 mol × 2 = 0.072 mol

1 mole contain 6.022×10²³ atoms

0.072 mol × 6.022×10²³ atoms / 1mol

0.43×10²³ atoms

3 0
3 years ago
Which are isotopes? an atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has which are
olga55 [171]
Isotopes have the same atomic number or same number Protons, but different mass number or neutrons.

You can say atomic number or protons.

22 neutrons 20 protons
atomic number 20 and a mass number 40
Atomic number 20 and mass # 42
6 0
3 years ago
Read 2 more answers
What are products of a reaction between KOH(aq) and HCI(aq)
nata0808 [166]

Answer:

salt and water only

Explanation:

neutralization reaction

8 0
3 years ago
The graph below shows how the temperature and volume of a gas vary when
Eddi Din [679]

Answer:

D

Explanation:

PV =nRT

So V and T are inversely proportional

7 0
3 years ago
1. What is the molarity of 6.4g of methanol dissolved in 50 moles of water2. If the density of the above solution at 25C is 1.03
ICE Princess25 [194]

Answer:

1. 0.22 mol/dm³

2. 0.23 mol/dm³

Explanation:

Molarity: This can be defined as the concentration of a substance  in mol per dm³

1.

M = n/v ...................... Equation 1

M = molarity of methanol, n = number of mole of methanol, v = volume of the solvent/water/solution.

<em>n = g/m.m</em>

<em>Where g = mass of methanol, m.m = molar mass of methanol.</em>

<em>g = 6.4 g, m.m = 32 g /mole.</em>

<em>n = 6.4/32 = 0.2 mole</em>

<em>and ,</em>

<em>v = m/d </em>

<em>Where m = mass of water, d = density of water</em>

<em>m = mass of 50 moles of water = 18×50 = 900 g.</em>

d = 1000 g/dm³.

v = 900/1000 = 0.9 dm³

Substituting the value of v and n into equation 1

M = 0.2/0.9

M = 0.22 mol/dm³

2.

M = n/v

v = volume of the solution

v = (mass of methanol + mass of water in the solution)/density of the solution

v = [(900+6.4)/1000]/1.03

v = 0.9064/1.03

v = 0.88 dm³

n = 0.2 mole

Therefore,

M = 0.2/0.88

M = 0.23 mol/dm³

3 0
3 years ago
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