How many moles are present in 150g of ammonium hydrogen phosphite

The moles that are present in 150 g of ammonium hydrogen phosphite is 1.136 moles

calculation

The formula of ammonium hydrogen phosphite = (NH4) 2HPO4

moles = mass/molar mass

mass = 150 g

molar mass of (NH4) 2HPO4 = [ (14 + 1x4) 2) + 1 + 31 + (4 x16) ] = 132 g/mol

moles is therefore = 150 g / 132 g/mol = 1.136 moles