Mole calculations-1

How many molecules are in 9.44 moles of AlCl₃?

• 5.68 molec AlCl₃
• 5.68x10²⁴ molec AlCl₃
• 0.705 molec AlCl₃
• 1.25x10²³ molec AlCl₃

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1
• 2
• 3
• 4

What would be the mass of 1.5mol H₂O

• 20
• 27
• 32
• 40

What is the molar mass of Zn(C₂H₃O₂)₂

• 392.8g/mol
• 142.9g/mol
• 361g/mol
• 183.5 g/mol

What is the molar mass of (NH₄)₂CO₃ ?

• 144 g
• 138 g
• 96 g
• 78 g

Tags

NGSS.MS-PS1-1

How many particles are in 13.5 grams of Beryllium?

• 1.5 particles
• 9 particles
• 4x10²³ particles
• 9x10²³ particles

Tags

NGSS.HS-PS1-7

What is the gram-formula mass of a compound if 5 moles of the compound has a mass of 100 grams?

• 5 g
• 20 g
• 100 g
• 500 g

Tags

NGSS.HS-PS1-7