Nomenclature and Balancing Chemistry Equations

In a sample of solid Ba(NO₃)2 the ratio of Barium ions to nitrate ions is

• 1:3:2

• 1:2

• 2:1

• 1:6

A Chemical formula is an expression used to represent

• Mixtures only

• Elements only

• Compounds only

• Elements and compounds

Which formula represents a a compound?

• Fr

• Mn

• LiH

• O₃

What is the total number of atoms in the in the formula Ca(NO₃)_2?

• 7

• 2

• 3

• 9

What is the total number of Sulfur atoms in the formula (NH₄)₂ SO₄

• 1

• 2

• 3

• 4

What is the total number of hydrogen atoms in the formula 3Mg(C₂H₃O₂)₂

• 3

• 6

• 12

• 18

An example of an empirical formula is

• S₂H₂

• H₂O₂

• C₂Cl_2

• CaCl₂

Which is an empirical formula?

• C₂H₂

• C₂H₄

• Al₂Cl₆

• K₂O

Which compound has the same empirical and molecular formula?

• H₂O₂

• NH₃

• C₂H₆

• Hg₂Cl₂

Two molecules of Hydrogen are represented by

• H₂

• 2H₂

• 2H⁺

• 2H