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Nastasia [14]
3 years ago
14

All gases diffuse rapidly but different rates. For example Carbon dioxide diffuses slower than oxygen gas and hydrogen gas. The

rate of diffusion of each gas is dependent on its
A) bond type
B) solubility
C) molecular mass
D) electronegativity
Chemistry
2 answers:
Mumz [18]3 years ago
7 0
The answer is c your welcome
REY [17]3 years ago
7 0
Gas is a state of matter is always in motion. It has no fixed shape but will take the shape of the space provided. Gas also doesn't have a fixed volume but will fill the space available. The movement of the gas depends on the molecular mass. Diffusion is movement of molecules across its concentration gradient. Carbon dioxide molecular mass is higher than oxygen and hydrogen so that is why it diffuses slower. 
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What mass of lead (II) chloride is produced when 200.0 mL of a 0.250 M solution of sodium chloride is mixed with 200.0 mL of a 0
kow [346]

Answer:

Option d. 6.95 g

Explanation:

First of all, we state the reaction:

2NaCl + Pb(NO₃)₂ → PbCl₂ +  2NaNO₃

We determine the moles of each reactant, to state the limiting

Firstly we convert volume frm mL to L

0.200 L . 0.250M = 0.05 moles of NaCl

0.200L . 0.250M = 0.05 moles of Pb(NO₃)₂

Acording to stoichiometry we know that relation is 1:2, so the limiting reagent is the NaCl.

For 1 mol of Pb(NO₃)₂ I need 2 moles of NaCl

For 0.05 moles of Pb(NO₃)₂ I would need, the double → 0.1 moles

(We only have, 0.05 moles of NaCl)

Stoichiometry to the formed product is 2:1

From 2 moles of NaCl I produce 1 mol of PbCl₂

From 0.05 moles I would produce, the half → 0.025 moles

Let's convert the moles to mass → 0.025 mol . 278.1 g / 1mol = 6.95 g

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