Calculate the number of molecules of CH4 in 48g CH4?
To answer this question, you must understand how to convert grams of a molecule into the number of molecules. To do this, you have to utilize the concepts of moles and molar mass.
A mole is just a unit of measurement. Avogadro's number is equal to
For example, one mole of hydrogen gas (
So the overall solution for this problem is to use molar mass of
One mole of methane equals 16.04 grams because a molecule of methane has an atomic weight of 16.04. The conversion factor will be 16.04 grams/mole.
When you multiple and divide everything out, you get
Notice this is a modified T-chart so the grams