Unit 1 Chemistry THe Mole

What is the molar mass of Calcium nitrate?

• 148.25 g/mol

• 164.10 g / mole

• 102 g/mol

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

How many Carbon atoms are in one mole of Carbon?

• 6.022 x 10²³

• 1

• 12

• not enough information

What is the percent by mass of magnesium in MgO?

• 19.98%

• 39.69%

• 5.88%

• 60.31%

Tags

NGSS.HS-PS1-7

What is the molar mass of carbon dioxide?

• 12.40 g/mol

• 16.55 g/mol

• 32.21 g/mol

• 44.01 g/mol

What is the molar mass of silver fluoride?

• 514.9 g/mol

• 99.7 g/mol

• 126.87 g/mol

• 198.8 g/mol

How many water molecules are in 5.2 moles of water?

• 6.02 x 10²³
• 5.2
• 3.1304 x 10²⁴
• 8.638 x 10^-24

How many moles of methane (CH₄) are in 1.24 x 10²³ molecules of methane?

• 6.02 x 10²³
• 7.46 x 10⁴⁶
• 978
• 0.206

Tags

NGSS.HS-PS1-7

What is the molar mass of Calcium nitrate?

• 148.25 g/mol
• 164.088 g / mole
• 102 g/mol

How many moles are in 16.94g of water?

• 16.94
• 0.9403
• 305.2
• 1.063