Mr - Relative formula mass

What is the relative molecular mass of fluorine gas, F₂?

• 19
• 38
• 9
• 18

What is the unit of relative molecular mass?

• kilogram
• gram
• gram per mole (g/mol)
• no units

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 atomic mass of magnesium?

• 2
• 4
• 12
• 24

What is the relative formula mass of NaOH?

• 20
• 39
• 40
• 45

Calculate the relative formula mass of

copper (ii) chloride, CuCl₂

[Relative atomic mass:

O = 16 ; Al = 27 ; S = 32 ; Cl = 35.5 ; Cu = 64 ]

(a)  

Calculate the relative formula mass of

aluminium sulphate, Al₂(SO₄)₃

[Relative atomic mass:

O = 16 ; Al = 27 ; S = 32 ; Cl = 35.5 ; Cu = 64 ]

(a)  

Tags

NGSS.HS-PS1-7

What is the relative atomic mass (A_r) of Carbon?

• 6

• 12

• 18

• 7

What is the relative atomic mass (A_r) of Xenon (Xe)?

• 54

• 77

• 131

• 132

What is the relative molecular mass (M_r) of Hydrochloric Acid (HCl)?

• 18

• 34.5

• 36.5

• 35.1