Chemistry: Understanding Mole Concept

How many moles of hydrogen are present in the unknown compound?

The combustion of 3.50 g of the compound produced 5.13 g of carbon dioxide and 2.10 g of water.

Answer:

0.23334 moles of Hydrogen

The mole concept is an essential aspect of chemistry that helps in determining the amount of a substance. In this case, to find the number of moles of hydrogen present in the unknown compound, we need to calculate the molecular weight of water (H₂O) and then use the formula for finding the number of moles.

The molecular weight of water (H₂O) is 18 grams/mol. By substituting the given values into the formula, we can determine that the number of moles of hydrogen in the unknown compound is 0.23334 moles.

The mole concept is based on Avogadro's number, which represents the number of elementary particles in one mole of a substance. Understanding this concept is crucial in various chemical calculations and analyses.