11 grade chemistry others
Formula unit mass of magnesium chloride is:a.) 94b.) 95c.) 96d.) 24
Formula unit mass of magnesium chloride is:a.) 94b.) 95c.) 96d.) 24
1 Answer
Askiitians Tutor Team
The formula unit mass of magnesium chloride can be calculated by adding up the atomic masses of magnesium and chlorine in the compound.
The atomic mass of magnesium (Mg) is approximately 24.31 grams/mol, and the atomic mass of chlorine (Cl) is approximately 35.45 grams/mol.
Since magnesium chloride (MgCl2) contains one magnesium atom and two chlorine atoms, the formula unit mass can be calculated as follows:
(1 * atomic mass of Mg) + (2 * atomic mass of Cl)
= (1 * 24.31 g/mol) + (2 * 35.45 g/mol)
= 24.31 g/mol + 70.90 g/mol
= 95.21 g/mol
Therefore, the correct answer is b.) 95.
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