Moles

How many potatoes are in one dozen potatoes?

• 10
• 12
• 2
• 6.02 x 10²³

How many atoms of iodine are in a mole of iodine?

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

The number 6.02 x 10²³ is called...

• Avocado's number
• Bohr's number
• Planck's constant
• Avogadro's number

What is the molar mass of NaCl?

• 58.45g/mol
• 28g/mol
• 12g/mol
• 6.02 x 10²³

What is the molar mass of C₂H₄O₂?

• 40g
• 50g
• 60g
• 68g

How do we get mass from moles?

• multiply by Avogadro's number/1 mole
• multiply by molar mass/1 mole
• multiply  by 1 mole/Avogadro's number
• multiply by 1 mole/molar mass

What would be the mass of 1.5mol H₂O

• 20
• 27
• 32
• 40

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 101.75 g
• 121.75 g
• 111.75 g
• 131.75 g

How many particles would be in 8.4 moles of Octane (C₈H₁₈)?

• 5.77 x 10²³
• 5.04 x 10²⁴
• 5.77 x 10²⁶
• 5.04 x 10²³

Tags

NGSS.HS-PS1-7

How many molecules are in 32.4 grams of phosphorous pentoxide?

• 1.76 x 10²³ molecules
• 0.29 moles
• 1.76 x 10²² molecules
• 0.29 molecules