You have a 5-liter container with 1.30 x 10^24 molecules of ammonia has (nh3). how many molecules of hydrogen gas (h2) are in an identical container at the same temperature and pressure

B) 1.30 ×10²⁴ molecules

Explanation:

According to Avogadro law,

Equal volume of all gases at same temperature and pressure have equal number of molecules.

For equal volume the amount of gas (moles) would be same.

V ∝ n

V = Kn

k = proportionality constant

V₁/n₁ = V₂/n₂

V₁ = initial volume

n₁ = initial moles

V₂ = final volume

n₂ = final moles

So if ammonia has 1.30 ×10²⁴ molecules, hydrogen will have same molecules at same condition

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.