Respuesta :
To be able to compare the result with other experiments it has to be reported in moles.
number of moles = mass / molecular weight
number of moles of Mg(H₂PO₄)₂ = 600 / 218 = 2.75 moles
Answer: 2.75 moles of magnesium dihydrogen phosphate
Explanation: We have been given 600 gm of Mg(H2PO4)2 .
The molecular mass of Mg(H2PO4)2 is 218 gm.
As it is given that the answer should be in moles so that it can become comparable with other experiments, thus number of moles can be calculated by dividing the given mass by molecular mass of the given salt.
number of moles (n) = given mass(m) / molecular mass of the salt (M)
n= 600 gm / 218 gm = 2.75
Thus 2.75 moles of magnesium dihydrogen phosphate(Mg(H2PO4)2) will be recorded.