CHEMISTRY CONVERSION (MOLES, MASS, REPRESENTATIVE PARTICLES)

For the compound NaCl, if we had 10 grams of Chlorine (Cl), how many moles of Sodium would we have?

• 0.282 mol Na

• 3.55 mol Na

• 35.45 mol Na

• 1.55 mol Na

How many moles are in 22 g of argon? 

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

The total number of sodium atoms in 46.0 grams is

• 3.01 x 10²³
• 6.02 x 10²³
• 12 x 10²³
• 24 x 10²³

Which of the following dimensional analysis setups will correctly convert 4.00x10²³atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

• setup B : 0.6644mol Co
• setup A: 2.41x10⁴⁷mol Co
• setup A : 0.664mol Co
• setup B: 2.41x10⁴⁷mol Co

Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?

• A
• B
• C
• D

Which of the following dimensional analysis setups will correctly convert 27.76 g of Li to atoms of Li?

• A
• B
• C
• D

Determine the molar mass for carbon tetrachoride

• 153.823 g/mol
• 118.37 g/mol
• 189.35 g/mol
• 47.464  g/mol

What is the mass of 1.0 x 10¹² molecules of O₂?

• 1.9 x 10¹³ g
• 6.0 x 10¹¹ g
• 5.3 x 10^-11 g
• 1.7 x 10^-12 g

What is the molar mass of sodium sulfate, Na₂SO₄?

• 71.06 g/mol
• 94.05 g/mol
• 142.1 g/mol
• 215.1 g/mol

How many grams are in 2.4 moles of Sulfur?

• 76.8

• 0.075

• 13.3

• 32