Final Review #8: All Topics

Front

Which of the following elements is classified as a non-metal? Options: Te, H, Ce, As

Back

H is classified as a non-metal.

Front

How many grams are in 6.50 moles of Nitrogen gas (N₂)?

Back

182 g of Nitrogen gas (N₂) is present in 6.50 moles.

Front

The reaction of sulfuric acid with lithium hydroxide is shown below: H₂SO₄ + 2LiOH --> Li₂SO₄ + 2H₂O. If 16 moles of lithium hydroxide (LiOH) are consumed, how many moles of lithium sulfate (Li₂SO₄) are produced?

Back

8 moles of lithium sulfate (Li₂SO₄) are produced.

Front

How many moles are in 53.2 g of sodium chloride (NaCl)?

Back

0.91 moles of sodium chloride (NaCl) are present in 53.2 g.

Front

How many grams of iron (Fe) will be produced if 8.97 grams of carbon dioxide (CO₂) are produced? Options: 15.2 grams of Fe, 5.12 grams of Fe, 10.25 grams of Fe, 12.00 grams of Fe

Back

15.2 grams of iron (Fe) will be produced.

Front

What is the definition of a mole in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10²³ particles (atoms, molecules, etc.).

Front

What is the molar mass of sodium chloride (NaCl)?

Back

The molar mass of sodium chloride (NaCl) is approximately 58.44 g/mol.

Front

What is the balanced equation for the reaction of sulfuric acid with sodium hydroxide?

Back

H₂SO₄ + 2NaOH --> Na₂SO₄ + 2H₂O.

Front

How do you calculate the number of moles from grams?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the principle of conservation of mass in a chemical reaction?

Back

The principle of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.