Molecules to Grams

How many molecules are in 27.5 grams of NaOH

• 41.4 molecules

• 4.14 x 10²³ molecules

• 4.14 x 10²⁵ molecules

• 1.83 x 10^-21 molecules

When you are solving for molecules, atoms, and particles you always use what number?

• 6.02 X 10²³

• Lucky 7

• Guess

• 24

Determine the mass of 4.20 moles of C₆H₁₂

• 354 g

• 84 g

• 337 g

• 421 g

How many grams are in 1.2 x 10²⁴ atoms of C?

• 29.34 grams

• 23.94 grams

• 6.02 grams

• 1.21 grams

What is the mass of 2.5 moles of water (H2O)?

• 45 g

• 50 g

• 55 g

• 60 g

How many molecules are there in 18 grams of water?

What is the molar mass of carbon dioxide (CO2)?

• 44 g/mol

• 32 g/mol

• 28 g/mol

• 18 g/mol

If you have 3.01 x 10^23 molecules of nitrogen gas (N2), how many grams do you have?

• 7 grams

• 14 grams

• 21 grams

• 28 grams

How many grams are in 0.5 moles of glucose (C6H12O6)?

• 90 g

• 80 g

• 75 g

• 60 g

What is the mass of 1 mole of oxygen gas (O2)?

• 16 g

• 32 g

• 48 g

• 64 g