# What is the percent composition of O in LiOH?

The formula shows that oxygen is one atom out three in the formula unit, so that the atomic percent of oxygen in the compound is 33.333.......... By adding the gram atomic masses of the three elements, one obtains 23.95 as the gram formula mass, to the justified number of significant digits (the four digits in the value for the gram atomic mass of lithium), and 100 (15.9994/23.95) is 66.80 percent by mass of oxygen in LiOH.

### What is percent composition of AgNO2?

The percent composition of the elements in AgNO2 are: 70% Ag, 9% N, and 21% O. To determine the percent composition of each element, divide the molar mass of each element by the molar mass of the compound and multiply by 100. The molar mass of AgNO2 is 154 g/mol. The molar mass of Ag is 108 g/mol, the molar mass of N is 14 g/mol, and the molar mass of 2 O atoms is…

### What is percent composition of C6H10O5?

Percent composition means finding the total mass of each element in a molecule and then dividing it by the molecular mass. Use the molecular formula to help you find out how many atoms of each element you'll need. For carbon: 6 C x 12 g = 72 g For hydrogen: 10 H x 1 g = 10 g For oxygen: 5 O x 16 g = 80 g Molecular mass = C + H +…