Mole Practice #3

What is the mass of 1.2 moles of IrI₃?

• 570 g
• 690 g
• 320 g
• 957 g

How many moles are in 16.94g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

How many grams are in 3.3 mol of Potassium sulfide (K₂S)?

• 360 g
• 454 g
• 238 g
• 132 g

You have 8.65 x 10²⁵ atoms arsenic. How many grams do you have?

• 144 g As
• 10,765 g As
• 107 g As
• None of these

Tags

NGSS.HS-PS1-7

Which of the following would have the highest number of moles?

• 4 g CO₂
• 15 g H₂O
• 22 g NaCl
• 100 g AgCl

Which of the following would have the highest mass?

• 0.75 mol Co₃(PO₄)₂
• 12 mol CH₄
• 16.2 mol chlorine gas
• 1.2 mol IrI₃

Tags

NGSS.HS-PS1-7

Calculate the number of nitrogen atoms in 20.9 grams of nitrogen.

• 1.49 moles
• 0.746 moles
• 0.37 moles
• 1.74 moles

Tags

NGSS.HS-PS1-7

Which compound has the smallest molar mass?

• CO
• CO₂
• H₂O
• H₂O₂

Which has more molecules?

• 1 mole H₂O
• 1 mole Al(OH)₃
• 1 mole NaCl
• There are all the same

How many grams of silicon would there be in a sample that contained 9.99 x 10^22 atoms?

• 1.69 g

• 4.66 g

• 1.66 g

• 1.79 g