S2 Formula-compounds containing 2 or more elements

What is the formula of the substance shown?

• CHO

• C₂H₅O

• C2H6O

• C₂H₆O

Which of the following is a possible formula for the substance shown?

• CH₂Cl₂

• CHCl₃

• CHCl

• CH₃Cl

What is the formula of sodium nitrate?

• Na₂NO₃

• NaNO₃

• NaN₃

• Na₃N

What is the formula of calcium hydroxide?

• CaOH

• Ca₂OH

• Ca(OH)₂

• CaOH₂

What is the formula of aluminium sulfate?

• Al₂(SO₄)₃

• AlSO₄

• Al₂S₃

• Al₃(SO₄)₂

What is the formula of calcium phosphate?

• Ca₄PO₂

• Ca₃(PO₄)₂

• CaPO₄

• Ca₃P₂

What is the formula of ammonium chloride?

• NH₂Cl₄

• NHCl

• NHCl₄

• NH₄Cl

What is the formula of zinc(II) nitrate?

• ZnN

• Zn₂NO₃

• Zn(NO₃)₂

• Zn₃(NO)₂