Question

1. You are given the number of moles of carbon and must convert it to an equivalent mass using the molar mass from the periodic table. The carbon sample is 0.045 moles.

2.  How many moles of potassium are in 525.0 g of pure potassium? Explain

Answer 1

The molar mass of carbon is 12.01 g/mol. To convert from moles of carbon to mass, we must multiply 0.045 moles by 12.01 g/mol. This gives us 0.54045 g of carbon.

To convert from mass to moles of potassium, we must divide 525.0 g by the molar mass of potassium, which is 39.10 g/mol. This gives us 13.40 moles of potassium.