Number of moles and molar mass-2

What is the numerical value of Avogadro's number?

• 60.22x10²³
• 6.022x10²³
• 6.022x10³²
• 6.022x10²⁴

How many representative particles are found in 1.23 mol of Polonium. 

• 2.41x10²⁴
• 7.53x10²³
• 6.02x10²³
• 1.20x10²⁴

Which has more atoms, 0.1 mole of silver or 1 mole of gold?

• 1 mole of gold
• 0.1 mole of silver
• False, they are the same
• Not enough information

What would a sample of 3.99x10²⁴ water molecules weigh?

• 11.92 g
• 119.26 g
• 1.926 g
• 6.63 g

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁴

How many moles are in 6 x 10²³ molecules of H₂O?

• 1
• 2
• 6
• 600

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

1 mole is equivalent to 6.02 x 10²³

• False

• True

the mass of one mole of a substance

• mole

• molar mass

• mole ratio

• percent composition