Mole

1

100

What type of particle constitutes oxygen gas (O₂)

molecule

200

How many moles are present in 252 grams of pentene (C₅H₁₀)

3.60 Mole

300

How many calcium ions (Ca²⁺) are present in 3 moles of calcium carbonate (CaCO₃)

1.81 x 10²⁴ ions

400

To obtain an aluminum (Al) sheet containing 1.806 x 10²⁴ atoms, what mass of pure aluminum, in kilograms, must be ordered?"

0.081 kilograms

2

100

What are the various types of particles?

atoms, molecules, and ions

200

How many moles are present in 100 potassium ions (K⁺)

1.66 x 10^-22 Mole

300

How many atoms are present in 10 grams of iron (Fe)

1.08 X 10²³ atoms

400

A 12.7 grams copper (Cu) sheet undergoes a chemical reaction. If 6.02 x10²² copper atoms are lost during the process, what is the remaining mass of the sheet in grams?

6.35 grams

3

100

What is the value of the Avogadro constant?

6.02 X 10²³

200

How many atoms are present in 1 mole of acetic acid (CH₃COOH)

8 x 6.02 x 10²³ atoms

300

What is the mass, in grams, of 3.59 X 10²³ atoms of iron (Fe)

33.3 grams

400

Analyze and compare the masses of 1.5 moles of carbon dioxide gas (CO₂) and 5.0 moles of ammonia gas (NH₃). Determine which substance possesses a greater mass and calculate the difference in grams.

The mass of ammonia gas (NH₃) is greater by 19 grams.