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Question

The number of moles present in 44.8 litres CO2 at STP is

(a) 3

(b) 1

(c) 2

(d) 1.5

WBBSE Class X Physical Science Chemical Calculations 01 Mark 2024

Answer

(c) 2

Explanation

At STP, 1 mole of any gas occupies 22.4 litres.

Given volume of CO2 = 44.8 litres.

Number of moles = 44.8 ÷ 22.4 = 2

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