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rodikova [14]
4 years ago
5

How many grams of methane gas (CH4) occupy a volume of 11.2 liters at STP

Chemistry
2 answers:
Vsevolod [243]4 years ago
7 0
11.2L/22.4L (STP value) x 1 mol of CH4 x 16.04 g of CH4 = 8.2 g
JulsSmile [24]4 years ago
3 0

Answer:  

7.91 g

Step-by-step explanation:  

1. Calculate the number of moles

STP is 0 °C and 1 bar .

One mole of a gas at STP has a volume of 22.71 L .

Moles of CH₄ = 11.2 L × (1 mol/22.71 L)

n = 0.4932 mol  

2. Calculate the mass of CH₄

Mass of CH₄ = 0.4932 × 16.03

Mass of CH₄ = 7.91 g

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