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Lera25 [3.4K]
2 years ago
8

Which layers of the earths are common to both the compostitional and mechanical descriptions

Chemistry
1 answer:
Nutka1998 [239]2 years ago
3 0
The correct is answer is c
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40.0L of N₂ gas are in a sealed container at STP.How many moles of N₂ are present?9 mol
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Explanation:

We have to find the number of moles of N₂ that are present in a sample that has a volume of 40.0 L at STP.

STP means Standard Conditions of Temperature and Pressure. These conditions are 273.15 K and 1 atm. We know that 1 mol of N₂ will occupy 22.4 L. We can use that ratio to find the answer to our problem.

1 mol of N₂ = 22.4 L

moles of N₂ = 40.0 L * 1 mol/(22.4 L)

moles of N₂ = 1.79 mol

Answer: 1.79 moles of nitrogen are present.

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