Final answer:
To convert 153.0 g of Mg(CN)2 into moles, divide the mass by the molar mass of Mg(CN)2.
Step-by-step explanation:
To convert 153.0 g of Mg(CN)2 into moles, we need to use the molar mass of Mg(CN)2. The molar mass of Mg(CN)2 can be calculated by adding up the atomic masses of each element in the compound. The atomic mass of Mg is 24.305 g/mol, the atomic mass of C is 12.01 g/mol, and the atomic mass of N is 14.01 g/mol. There are two nitrogen atoms and four carbon atoms in Mg(CN)2. Using these values, we can calculate the molar mass of Mg(CN)2 as follows:
(24.305 g/mol) + (4 x 12.01 g/mol) + (2 x 14.01 g/mol) = 97.210 g/mol
To convert grams to moles, we use the formula:
moles = grams / molar mass
Plugging in the values, we get:
moles = 153.0 g / 97.210 g/mol ≈ 1.574 moles
Therefore, converting 153.0 g of Mg(CN)2 into moles yields approximately 1.574 moles.