Moles to grams and Molar Mass

What is the mass of one mole of AuCl₃?

• 96g
• 130g
• 232.5g
• 303.5g

36.0 g of Be contains how many moles?

• 0.25 mol
• 4.0 mol
• 45 mol
• 320 mol

4.0 moles of H₂O would have what mass?

• 72 g
• 23 g
• 68 g
• 4.5 g

How many moles are in 9.8 grams of calcium? 

• 0.2 moles
• 4.1 moles
• 1 mole
• 392 moles

What is the molar mass of NaCl?

• 35.45 g/mol

• 22.99 g/mol

• 58.44 g/mol

• 60.00 g/mol

How many moles are in 18 grams of water (H₂O)?

• 2 moles

• 1 mole

• 0.1 moles

• 0.5 moles

Tags

NGSS.HS-PS1-7

What is the mass of 2 moles of CO₂?

• 22 g

• 176 g

• 44 g

• 88 g

Which of the following is true about 1 mole of a substance?

• 1 mole of every substance contains the same number of molecules or atoms.

• 1 mole of every substance has the same mass.

• 1 mole of a substance contains only 6 atoms.

• 1 mole of a substance weighs 1 gram

Calculate the molar mass of Mg(OH)_2.

• 42.33 g/mol

• 41.32 g/mol

• 82.64 g/mol

• 58.33 g/mol

Which of the following statements about a mole is incorrect?

• One mole of a substance always contains 6.022 x 10²³ particles.

• One mole of a substance always has the same mass, regardless of the substance.

• The mole is a standard unit in the International System of Units (SI).

• The number of particles in a mole is constant, but the mass of a mole depends on the substance.