the molar mass of water (h₂o) is 18.0 g/mol. a sample of water has a mass of 18.0 g. how many moles of water…

the molar mass of water (h₂o) is 18.0 g/mol. a sample of water has a mass of 18.0 g. how many moles of water are contained in this sample?\n1.00 mole\n18.0 moles\n36.0 moles\n324 moles

the molar mass of water (h₂o) is 18.0 g/mol. a sample of water has a mass of 18.0 g. how many moles of water are contained in this sample?\n1.00 mole\n18.0 moles\n36.0 moles\n324 moles

Answer

Explanation:

Step1: Recall mole - mass formula

The formula to calculate the number of moles $n$ is $n=\frac{m}{M}$, where $m$ is the mass and $M$ is the molar mass.

Step2: Substitute given values

Given $m = 18.0\ g$ and $M=18.0\ g/mol$. Then $n=\frac{18.0\ g}{18.0\ g/mol}$.

Step3: Calculate the number of moles

$n = 1.00\ mol$.

Answer:

A. 1.00 mole