Question

Find the mass of 112L CO2 at STP?​

Answer 1

Step-by-step 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 = 5

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

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

Mass of CO2 gas = 5 × 44g

= 220g

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

Now, number of molecules = Number of moles × 6.022 × 1023

= 5 × 6.022 × 1023

= 3.011 × 1024

Thus, number of molecules of CO2 is 3.011 × 1024

Answer 2

Answer:

22 g

Step-by-step explanation:

mass of 22.4 litre co2 = 44 g

bcoz, molecular weight of co2 is 44 and molar volume any gas at STP is 22.4 l.

so, mass of 11.2 l co2 at STP is

$\frac{44}{2} gm = 22 gm$