The molecular weight of nitrous oxide (N2O) is 44.02g/mol. How many moles of N2O are in 10.0g of it?Express the answer to 3 significant figures.
Question
The molecular weight of nitrous oxide (N2O) is 44.02g/mol. How many moles of N2O are in 10.0g of it?Express the answer to 3 significant figures.
Solution
To calculate the number of moles from the mass of a substance, you can use the formula:
Number of moles = mass of substance (g) / molar mass (g/mol)
Given:
- The molar mass of N2O is 44.02 g/mol
- The mass of N2O is 10.0 g
Substitute these values into the formula:
Number of moles = 10.0 g / 44.02 g/mol = 0.227 moles
So, there are 0.227 moles of N2O in 10.0 g of it. This answer is already expressed to three significant figures.
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