Which of the following passes highest mass ? (a) 0.2 mole of carbon dioxide
(b) 2.24 L So4
(c) 3.01×10{23}
(d) 20 gram of calcium
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Answer:
(a)
mass = number of moles × molar mass
1 mole of CO2 = 44g
0.2 moles of CO2 = 44*0.2 = 8.8g
(b)
1 mole of gas occupies 22.4 L volume at ntp
22.4 L of SO2 gas = 64g
2.24 L of SO2 gas = (64*2.24)/22.4 = 6.4 g
1 mole of anything contains 6.023*1023 molecules/atoms/entities etc.
(c)6.023*1023 molecules of H2O = 18g
3.011*1023 molecules of H2O = (18*3.011*1023)/6.023*1023 =9g
Hence (4) is the correct option
Explanation:
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