Review Quiz 1: Moles and Molar Mass

What is a mole?

• 6.022 x 10²³ particles of any substance

• A small burrowing animal

• A dark spot on your skin

• A spy

Which of these elements has the highest molar mass?

• Hydrogen

• Iron

• Carbonate

• Cobalt

The mass of one mole of substance is called...

• molecular mass
• mole constant
• molar mass
• atomic weight

What is the molar mass of table salt (NaCl)?

• 805 g/mol

• 35 g/mol

• 23 g/mol

• 58 g/mol

Calculate the molar mass of water (H₂O).

• 10 g/mol

• 17 g/mol

• 18 g/mol

• 34 g/mol

Calculate the molar mass for Al(OH)₃

• 78.0 g/mol

• 72 g/mol

• 28 g/mol

• 25 g/mol

85.0 g of NaOH is equal to how many moles?

• 3400 moles

• 45 moles

• 0.47 moles

• 2.1 moles

2.0 moles of AuCl₃ is equal to how many grams?

• 152 g

• 607 g

• 464 g

• 0.007 g

25.0 g of MgCO₃ is equal to how many moles?

• 0.30 moles

• 3.4 moles

• 2100 moles

• 0.48 moles

Which of the the following describes how to convert 10.0 g H2O to moles?

• $$10.0g\times \frac{18.015g}{1mol}$$