MCQOPTIONS
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| 1. |
Calculate the number of iron atoms in a piece of iron weighing 2.8 g.(Atomic mass of iron\[=56\]) |
| A. | \[30.11\times {{10}^{23}}\]atoms |
| B. | \[3.11\times {{10}^{23}}\]atoms |
| C. | \[3.0115\times {{10}^{22}}\]atoms |
| D. | \[301.1\times {{10}^{23}}\]atoms |
| Answer» D. \[301.1\times {{10}^{23}}\]atoms | |