molar mass and mole conversions (review for unit 5)

What is the molar mass of lead (II) sulfate?

• 303.27 g/mol

• 255.27 g/mol

• 163.87 g/mol

• 372.27 g/mol

Shivani measures out 6.0 moles of epsom salt (MgSO₄) to put in her bath. How many grams of MgSO₄ went in the bath?

• 3.6 x 10²⁴ g

• 720 g

• 0.050 g

• 340 g

Tags

NGSS.HS-PS1-7

A beaker contains 3.0 moles of copper. How many grams of copper are in the beaker?

• 190.7 g

• 21.2 g

• 0.047 g

• 86.3 g

What is the molar mass of gold (III) chloride?

• 96 g

• 130 g

• 232.5 g

• 303.3 g

How many moles are present in 32.3 grams of carbon dioxide?

• 44.01 moles

• 1421.52 moles

• 32.3 moles

• 0.73 moles

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

Tags

NGSS.HS-PS1-7

What is the mass of one mole of ammonium carbonate?

• 144g

• 138g

• 96g

• 74g

36.0 g of Be contains how many moles?

• 0.25 mol
• 4.0 mol
• 45 mol
• 320 mol

4.0 moles of water would have what mass?

• 72 g

• 23 g

• 68 g

• 4.5 g

What is the molar mass of manganese (VII) selenide?

• 134 g/mole

• 663 g/mole

• 189 g/mole

• 608 g/molw