Multiple Choice
Which one of the following is NOT an empirical formula?
A) CHO
B) CH2O
C) C2H4O
D) C2H6O2
E) C3H8O
Correct Answer:

Verified
Correct Answer:
Verified
Q89: Calculate the molar mass of Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>.<br>A) 87.05
Q90: Calculate the molar mass of H<sub>2</sub>CO<sub>3</sub>.<br>A) 62.03
Q91: Identify the compound used in welding torches.<br>A)
Q92: Which of the following compounds is vinegar?<br>A)
Q93: Identify an ether.<br>A) CH<sub>3</sub>CH<sub>2</sub>OCH<sub>2</sub>CH<sub>3</sub><br>B) CH<sub>3</sub>CH<sub>2</sub>Br<br>C) CH<sub>3</sub>CH<sub>2</sub>PH<sub>2</sub><br>D) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub><br>E)
Q95: Which of the following compounds is ethanol?<br>A)
Q96: Give the name for KHSO<sub>3</sub>.<br>A) monopotassium bisulfide<br>B)
Q97: Give the formula for sulfurous acid.<br>A) H<sub>2</sub>SO<sub>3</sub><br>B)
Q98: Identify the element whose ion only exists
Q99: How many moles of N<sub>2</sub>O<sub>4</sub> are in