Question

How many moles of phosphoric acid are there in 658 grams of phosphoric acid?

Answer 1

To find the number of moles of phosphoric acid in 658 grams, divide the mass of phosphoric acid by its molar mass. The molar mass of H3PO4 is 98.0 g/mol. Therefore, there are approximately 6.72 moles of phosphoric acid in 658 grams.

Step-by-step explanation:

To find the number of moles of phosphoric acid in 658 grams, we need to use the molar mass of phosphoric acid. The molar mass of H3PO4 is 98.0 g/mol.

First, calculate the number of moles of phosphoric acid by dividing the mass of phosphoric acid by its molar mass:

Number of moles = mass / molar mass

Number of moles = 658 g / 98.0 g/mol

Number of moles = 6.72 mol

Therefore, there are approximately 6.72 moles of phosphoric acid in 658 grams.

Answer 2

The molecular formula for phosphoric acid is H3PO4 and has 97.994 grams per mol. In a sample of 658 grams of phosphoric acid, there are 6.71 mols of phosphoric acid.