Test a MgCl_(2) b 5908g/mol 95.2g/mol 125.8g/mol 76.4g/mol C d a. 54.0% What is osc-Percent composition of aluminum in aluminum suit b. 28.1% C. 15.8% d. 84.2% a 264g How many grams are in 2.00 moles of sodium sulfate (Na_(2)S b. 2389 C. 0.0141 g d. 0.01700 44. Which of the following is an empirical formula? a. CH_(3) b. C_(6)H_(12)O_(6) C. N_(2)O_(4) d. C_(5)H_(10) 85. How many grams are in 6.02times 10^23 molecules of CO_(2) a. 44g b. 2.64times 10^25g C. 7.31g d. 64g 86. How many molecules of SO_(2) in 1.60 moles? a. 102.1times 10^1 b. 9.63times 10^23 C. 3.76times 10^23 d. 7.62times 10^1 87. What is the percent composition of Cr in chromium a. 31.6% b. 68.4% C. 34.2% d. 76.4% 88. Sodium nitrite (NaNO_(2)) is commonly used in proc pink color in meats and delays the development sodium nitrite. a. 20.30% b. 46.38% 33.32% d. 69.00% Name

Let's go through each question one by one:1. What is the percent composition of aluminum in aluminum sulfate ? - The molar mass of aluminum sulfate is . - The percent composition of aluminum is . - Therefore, the correct answer is c. .2. How many grams are in 2.00 moles of sodium sulfate ? - The molar mass of sodium sulfate is . - Therefore, the correct answer is b. .3. Which of the following is an empirical formula? - The empirical formula is the simplest whole-number ratio of atoms in a compound. - Therefore, the correct answer is a. .4. How many grams are in molecules of ? - The molar mass of is . - Therefore, the correct answer is a. .5. How many molecules of are in 1.60 moles? - The number of molecules in 1 mole is . - Therefore, the correct answer is b. .6. What is the percent composition of Cr in chromium ? - The molar mass of chromium is . - Therefore, the correct answer is b. .7. What is the percent composition of sodium in sodium nitrite ? - The molar mass of sodium nitrite is . - Therefore, the correct answer is a. .