1. Which of the following molecular formulas corresponds to magnesium hydroxide?

Question

1. Which of the following molecular formulas corresponds to magnesium hydroxide? (5 points) a. Mg(OH) b. Mg(OH)s c. Mn(OH)2 d. MgOH 2. Which of the following molecular formulas corresponds to sulfurous acid? (5 points) a. H SO b.H2S04 c. HSO4 d. H2SOs 3. What is the mass in grams of 9.13 x 10 molccules of CH COOH? (5 points) a. 9.0 grams b. 9.09 grams c. 8.94 grams d. 7.2 grams 4. For the reaction 6 Li + 3 S 3 LiS, how many moles of sulfur will react with 56 moles of Lids points) a. 336 moles of Li b. 28 moles of Li c. 110 moles of Li d. 19 moles of Li /20 Page 1 Version 8

Explanation / Answer

1. Magnesium Hydroxide = Mg(OH)2

Mg is 2+ so we need 2OH- to neutral the charge.

2. Sulfurous acid - H2SO3

H2SO3 is sulfuric acid.

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