Question
How many moles are in (a) $40 \mathrm{~g}$ of water, (b) $245 \mathrm{~g}$ of $\mathrm{CO}_{2}$ (carbon dioxide), (c) $138 \mathrm{~g}$ of $\mathrm{N}_{2}$ (nitrogen), and(d) $56 \mathrm{~g}$ of $\mathrm{O}_{2}$ (oxygen) at STP?
Step 1
Step 1: The number of moles is given by the formula: \[ n = \frac{m}{M} \] where \( n \) is the number of moles, \( m \) is the given mass, and \( M \) is the molar mass. Show more…
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