Milk of magnesia has the chemical formula Mg(OH)2. what is the mass of 3.2 moles of milk of magnesia? The molar mass of magnesium is 24.3 grams per mole.
The molar mass of hydrogen is 1.0 grams per mole. The molar mass of oxygen is 16.0 grams per mole.
A. 132.2 g
B. 135.4 g
C. 186. 6 g
D. 264. 3 g
I think its D
If your doing connection academy reaction rates quiz the answers are
These are the answers I got a 100% with, hope it helps:)
mol OH = 16+1 = 17 g/mol
Mg(OH)2 = 24.3 + 34 = 58.3 g/mol
times 3.2 = 186.6
How did you get D ?
ok but theyre literally just asking for someone to check their answers????? like oh no someone asked for help and now theyre getting it the horror
To find the mass of 3.2 moles of milk of magnesia, we first need to calculate the molar mass of Mg(OH)2.
Molar mass is the sum of the atomic masses of all the atoms in a compound.
The chemical formula Mg(OH)2 tells us that a molecule of milk of magnesia contains 1 atom of magnesium (Mg), 2 atoms of oxygen (O), and 2 atoms of hydrogen (H).
Now, we can calculate the molar mass of Mg(OH)2:
Molar mass of magnesium (Mg) = 24.3 g/mol
Molar mass of oxygen (O) = 16.0 g/mol
Molar mass of hydrogen (H) = 1.0 g/mol
Molar mass of Mg(OH)2 = (1 * molar mass of Mg) + (2 * molar mass of O) + (2 * molar mass of H)
Molar mass of Mg(OH)2 = (1 * 24.3) + (2 * 16.0) + (2 * 1.0) g/mol
= 24.3 + 32.0 + 2.0 g/mol
= 58.3 g/mol
Now we can find the mass of 3.2 moles of Mg(OH)2 using the formula:
Mass = Molar mass * Moles
Mass = 58.3 g/mol * 3.2 mol
= 186.6 g
Therefore, the mass of 3.2 moles of milk of magnesia (Mg(OH)2) is 186.6 grams.
So, the correct answer is C. 186.6 g.