What is the number of moles in 15.0 g of AsH3
To find the number of moles in 15.0 g of AsH3, we need to use the molar mass of AsH3 as a conversion factor.
The molar mass of AsH3 is calculated by adding up the atomic masses of each element:
Molar mass of AsH3 = (atomic mass of As) + (3 * atomic mass of H)
Molar mass of AsH3 = 74.92 g/mol + (3 * 1.01 g/mol)
Molar mass of AsH3 = 74.92 g/mol + 3.03 g/mol
Molar mass of AsH3 = 77.95 g/mol
To calculate the number of moles, we use the formula:
Number of moles = Mass / Molar mass
Number of moles = 15.0 g / 77.95 g/mol
Number of moles = 0.192 moles
Therefore, there are approximately 0.192 moles in 15.0 g of AsH3.