Chemisrty Unit 4 wksht 3

How does the mass ratio for Compound B compare to that in Compound A?

• The ratio in B is half that in A.

• The ratio in B is twice as great as that in A.

• The ratio in B is the same as in A.

• The ratio in B is three times that in A.

Express the mass ratio of Compound B as an improper fraction.

• 4/3

• 8/3

• 3/4

• 3/8

According to Hypothesis 2, what is the formula for Compound B?

• C3O4

• CO

• C3O8

• CO2

What is the mass of oxygen in Compound A?

• 42.9 g

• 57.1 g

• 72.7 g

• 27.3 g

What hypothesis suggests that atoms of O are heavier than C atoms by the ratio in compound A?

• Hypothesis 1

• Hypothesis 2

• Both Hypotheses

• Neither Hypothesis

How does the mass ratio for Compound B compare to that in Compound A?

• The mass ratio for Compound B is half as large as that in Compound A.

• The mass ratio for Compound B is the same as that in Compound A.

• The mass ratio for Compound B is twice as large as that in Compound A.

• The mass ratio for Compound B is three times as large as that in Compound A.

What is the formula for Compound B according to Hypothesis 2?

• CuO

• Cu2O

• Cu4O

• Cu8O

Which hypothesis suggests that all atoms have the same mass?

• Hypothesis 1

• Hypothesis 2

• Both Hypotheses

• Neither Hypothesis

Why is Hypothesis 2 considered more reasonable?

• The compounds are more complex.

• It assumes all atoms have the same mass.

• The compounds are simpler and it’s not reasonable that all atoms have the same mass.

• It assumes Cu atoms are lighter than O atoms.

What are the simplest formulas for compounds A and B of copper and chlorine?

• CuCl and CuCl₂

• ClCu and Cl₂Cu

• Cu₂Cl and CuCl₂

• CuCl₂ and Cu₂Cl