Relative Mass and the Mole

What is the molar mass of CO₂?

• 12

• 16

• 32

• 44

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

What is the relative formula mass of ammonium nitrate, NH₄NO₃ ?

[Relative atomic mass: N, 14; H, 1; O, 16]

• 76

• 79

• 80

• 90

What is the mass of one mole of aluminum?

• 27 g

• 13 g

• 54 g

• 14 g

What is the symbol used for the formula mass?

•  M_r

• F_m

• A_r 

• N_m 

The mass of one mole of a substance is called...

• molecular mass

• mole constant

• molar mass

• atomic weight

Tags

NGSS.HS-PS1-7

What is the mass of one mole of aluminum chloride?

• 62.5g

• 116.4g

• 133.3g

• 98g

Tags

NGSS.HS-PS1-7

Carbon dioxide gas and water vapour have molar masses of 44 g/mol and 18 g/mol respectively. Which statement(s) about these gases is/are correct?

• At the same temperature and pressure, they occupy the same volume

• At the same temperature and pressure, they occupy different volumes

• Samples of equal volumes of each gas would contain different no.s of moles of each gas

• Samples of equal volumes of each gas would contain the same no.s of moles of each gas

Tags

NGSS.HS-PS1-7

What is the total mass of a 0.75 mole sample of SO₂?

• 16 g

• 24 g

• 32 g

• 48 g

Tags

NGSS.HS-PS1-7

Calculate the number of moles of sodium hydroxide in 25cm³ of a 80 g/dm³ solution.

• 0.050 mol

• 0.10 mol

• 0.50 mol

• 0.010 mol