Question

The number of molecules in 22.4cub.cm of nitrogen gas at STP is

Answer 1

Answer:

we have to find number of molecules in 22.4 cm³ or 22.4 ml of nitrogen gas at STP.

at standard temperature and pressure (STP), volume of one mole of gas = 22.4 L = 22400 ml.

so, number of mole in 22.4ml = 22.4ml/22400ml = 1/1000 = 0.001

so, number of moles of nitrogen gas at STP = 0.001

now number of molecules of nitrogen gas = number of mole of nitrogen gas × 6.022 × 10²³

= 0.001 × 6.022 × 10²³

= 6.022 × 10^20

hence, number of molecules of nitrogen gas = 6.022 × 10^20 ........

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Answer 2

Answer:

Explanation:

22.4 cu.cm volume of any gas contain 1 mol of it or 6.022×10^23 molecules of any gas at STP