Chapter 9, Problem 22QAP

Using the average atomic masses given inside the front cover of this hook, calculate the mass in grains of each of the following samples.

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0.341 mole of potassium nitride

2.62 mmol of neon (1 mmol = 1/1000 mol)

0.00449 mole of manganese(II) oxide

   $7.18\times {10}^5$moles of silicon dioxide

0.00021 mole of iron(III) phosphate