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X'g sulphur has as many atoms as in 3g of carbon. The value of "X' is:(2) 8(4) 32(3) 16 |
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Answer» We are given that x grams of sulphur contain the same number of atoms as are there in 3g of carbon. Hence, we will first calculate the number of atoms in 3g of carbon. The molar mass that is the mass of 6.022 X 10^23atoms of carbon is 12g. Thus number of atoms in 12g of carbon = 6.022 X 10^23 number of atoms in 1g of carbon = (6.022 X 10^23) / 12 number of atoms in 3g of carbon = (6.022 X 10^23X 3) / 12 = 1.5055 X 10^23 Thus, we will now calculate the mass of sulphur which contains 1.5055 X 10^23atoms. The molar mass of sulphur is 32g. Thus there are 6.022 X 10^23atoms of sulphur in 32g of sulphur. So mass of 6.022 X 10^23atoms of sulphur = 32g mass of 1 atom of sulphur = [32 / (6.022 X 10^23)]g mass of 1.5055 X 1023atoms of sulphur = (32 X 1.5055 X 10^23) / (6.022 X 10^23) = 8g |
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