Mole Chemistry

What is the mass of one mole of silver?

• 32.06 g

• 107.87 g

• 14.01 g

• 22.99 g

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³ molecules

• 146 molecules

• 4.15 molecules

• 1.51x10²⁴ molecules

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

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

Tags

NGSS.HS-PS1-7

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

What is the mass of 0.89 mol of CaCl₂?

• 110.98 grams

• 0.0080 grams

• 98.77 grams

• 124.70 grams

Tags

NGSS.HS-PS1-7

The number 6.02 x 10²³ is called...

• Rutherford's number

• Bohr's number

• Thomson's number

• Avogadro's number

36.0 g of beryllium (Be) contains how many moles?

• 0.25 mol

• 4.0 mol

• 45 mol

• 320 mol

If I have 6.02 x 10²³ molecules of CO₂, what is the mass?

• 44.0 g

• 2.65 x10²³ g

• 1.37 x10²² g

• 96.0 g

How many moles are 2.85 x 10¹⁸ atoms of iron?

• 4.73 x 10^-6 moles

• 1.72 x 10⁴² moles

• 1.72 x 10^-42 moles

• 4.73 x 10⁶ moles