Question

HOW MANY ML OF S02 GAS ARE PRESENT AT STP IN A 100g SAMPLE THAT IS 6.4% SO2 BY MASS ?????

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Answer 1

SO2 is 6.4% by mass that means it is 6.4g SO2
$6.4 \times 100 \div 100$
now molecular wt of SO2 is 64 so no. of moles is
$6.4 \div 64$
no. of moles=0.1. 1mole=22.4l so 0.1 mole=2.24l. 1l=1000ml so 2.24l=2240ml. ANS-2240ml of SO2 gas is present.