# 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

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1640184

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D
A
C
A
C
24
synthesis
endothermic
rate
increase
These are the answers I got a 100% with, hope it helps:)

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2. A
3. C
4. A
5. C
6. 24
7. Synthesis
8. Endothermic
9. Rate
10. Increase

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## mol OH = 16+1 = 17 g/mol

sso
Mg(OH)2 = 24.3 + 34 = 58.3 g/mol
times 3.2 = 186.6
How did you get D ?

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## 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.

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