Chemistry 2022 Final Exam

What is the molar mass of NaOH?

• 40 g/mol
• 38.989 g/mol
• 23.998 g/mol
• 57.004 g/mol

What is the molar mass of AuCl₃?

• 96 g

• 130 g
• 232 g

• 302 g

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

How many molecules are in 1.25 mol of NaCl?

• 1.51x10²³
• 146
• 7.53 g

• 7.53x10²³

How many atoms of carbon are in 6.00g of carbon?

• 1.20x10²⁴atoms C
• 6.02x10²³atoms C
• 3.01x10²³atoms C
• 1.50x10²³atoms C

How many moles are in 3.01 x 10²³ atoms of magnesium?

• 0.5 moles

• 1.81 x 10⁴⁶ moles
• 5.00 x 10²¹ moles
• 18.1 moles

What is the mass of 0.89 mol of CaCl₂?

• 111 grams
• 0.008 grams
• 97.9 grams

• none of the choices

How many moles are in 22 g of argon? 

• 880 moles
• 0.55 moles
• 1.81 moles
• 5 moles

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

What is Avogadro's Number? 

• 6.02 x 10²³
• - 6.02 10²³
• 6.02 x 10²²
• 6,020,000,000,000