Question

Calculate the mass and number of molecules in 112 L of CO2 at STP

Answer 1

Answer: 220g

Explanation:

Given: Volume of CO2 gas at STP = 112L

Gram molecular mass of CO2 = 44g

First, we will calculate the number of moles so that we can find the mass of CO2 gas

As we know 1 mole of any gas occupies 22.4 litres of volume.

∴ 1 mole of NH3 = 22.4 litre

22.4 × Number of moles = 112 litres

Number of moles = 112 L / 22.4 L

                                       

Number of moles = 5

Now, we can calculate the mass of CO2 gas by applying the formula given:

We can write,

Mass of CO2 gas = Number of moles × GMM of CO2

Mass of CO2 gas = 5 × 44g

Mass of CO2 gas = 220g

Thus, mass of 112 L CO2 gas at STP is 220g

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Answer 2

answer:220g.

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