Chemistry Quiz

What is the molarity of an aqueous solution containing 5.0 moles NaOH in 2.0 L of solution?

• 1.0 M

• 2.5 M

• 5.0 M

• 10.0 M

How many mL of a 10.0 M HCl stock solution would you need to prepare 150 mL of 0.35 M HCl?

• 0.53 mL

• 5.3 mL

• 53 mL

• 530 mL

What is the molar mass of aluminum?

• 13.0 g/mol

• 27.0 g/mol

• 54.0 g/mol

• 108.0 g/mol

What is the molar mass of sodium?

• 11.0 g/mol

• 23.0 g/mol

• 46.0 g/mol

• 69.0 g/mol

What is the molar mass of carbon?

• 6.0 g/mol

• 12.0 g/mol

• 24.0 g/mol

• 36.0 g/mol

What is the molar mass of copper?

• 31.8 g/mol

• 63.5 g/mol

• 127.0 g/mol

• 254.0 g/mol

Tags

NGSS.HS-PS1-7

What is the molar mass of sodium chloride (NaCl)?

• 28.4 g/mol

• 58.4 g/mol

• 86.8 g/mol

• 116.8 g/mol

What is the molar mass of aluminum oxide (Al₂O₃)?

• 51.0 g/mol

• 75.0 g/mol

• 102.0 g/mol

• 153.0 g/mol

What is the molar mass of aluminum nitrate (Al(NO₃)₃)?

• 88.0 g/mol

• 165.0 g/mol

• 213.0 g/mol

• 279.0 g/mol

What is the empirical formula for a compound containing: C = 63.15%, H = 5.26%, O = 31.58%?

• CHO

• CH₂O

• C₂H₄O

• C₃H₆O₃