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 ?
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
sso
Mg(OH)2 = 24.3 + 34 = 58.3 g/mol
times 3.2 = 186.6
How did you get D ?
D
A
C
A
C
24
synthesis
endothermic
rate
increase
These are the answers I got a 100% with, hope it helps:)
2. A
3. C
4. A
5. C
6. 24
7. Synthesis
8. Endothermic
9. Rate
10. Increase
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.