Question

1.

Use the balanced equation 2H₂SO₄+ Cu ? SO₂ + 2H₂O + CuSO₄toanswer the following question.
The theoretical number of moles of copper that will react with fourmoles sulfuric acid is __________.

A) 6
B) 4
C) 2
D) 8

2.

Use the equation NaHCO₃ ?Na₂CO₃ + CO₂ + H₂Oto answer the following questions.

The theoretical number of moles of carbon dioxide produced from sixmoles NaHCO₃ is __________.

[Note: The equation must first be balanced to answer thequestion correctly.]

A) 6
B) 12
C) 1
D) 3

3.

If five moles of ammonia are produced in the reactionN₂ + 3H₂ ? 2NH₃,

the number of moles of hydrogen molecules consumed is__________.

A) 7.5
B) 3.2
C) 1.0
D) 5.0

4.

Use the unbalanced equation C₂H₆O+ O₂ ? CO₂ + H₂O to answer thefollowing questions.

If 4 mol of C₂H₆O and 3 mol of O₂are reacted completely, the number of moles of CO₂produced is ___________.

A) 1
B) 6
C) 2
D) 8

5.

Which statement is true?

A) The electron in the hydrogen atom always spins in a clockwisefashion.
B) The electron in the hydrogen atom loses energy as it spins aboutthe nucleus.
C) The electron in the hydrogen atom can be excited to any orbitalin the higher energy levels.
D) The electron in the hydrogen atom always stays in the 1sorbital.