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InterviewSolution
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Example 46. Calculate the number of gram atoms andnumber of gram molecules in 62g of phosphorus (P4). Atomicmass of P 31 amu. |
| Answer» <p>Atomic mass of phosphorus is 31 u</p><p>Molecular mass of P4= 31 X 4 = 124 u</p><p>Molar mass of P4= 124 g</p><p>1 mole P4molecule is =124g</p><p>124g of P4contains 6.023 X 10^23molecules of P4</p><p>62 g of P4contains -62 X 6.023 X 10^23/124 = 3.0115 X 6.023 X 10^23molecules of P4</p> | |