Gram/Mole/Volume Conversions

What is the mass of two moles of propane gas, C₃H₈?
1. 44 grams
2. 88 grams
3. 22 grams
4. 11 grams
How many moles of propane gas, C₃H₈, are contained in 11 grams of the gas at standard conditions?
1. 0.25 moles
2. 1.5 x 10²³ moles
3. 4 moles
4. 11 x 10²³ moles
What is the mass in grams of 3 moles of water molecules, H₂O?
1. 54 grams
2. 6 grams
3. 0.166 grams
4. 21 grams
How many moles of water molecules, H₂O, are present in a 27 gram sample of water?
1. 2 moles
2. 2/3 mole
3. 1.5 moles
4. 9 x 10²³ moles
What is the mass in grams of 10 moles of ammonia, NH₃?
1. 1.7 grams
2. 170 grams
3. 0.587 grams
4. 27 grams
What is the mass of 4 moles of hydrogen molecules (H₂)?
1. 0.5 grams
2. 8 grams
3. 2 grams
4. 4 grams
How many moles of methane molecules, CH₄, are in 80 grams of methane?
1. 0.201 moles
2. 5 moles
3. 80 x 10²³ moles
4. 6.02 x 10⁸⁰ moles
What volume would be occupied by two moles of propane gas, C₃H₈, at standard conditions?
1. 44.8 liters
2. 88 liters
3. 22. 4 liters
4. 11.2 liters
What volume is occupied by 4 moles of hydrogen molecules (H₂) at standard conditions?
1. 89.6 liters
2. 72 liters
3. 5.6 liters
4. 2.4 x 10²⁴ molecules
What volume is occupied by 10 moles of ammonia, NH₃, at standard conditions?
1. 170 liters
2. 6 x 10²⁴ liters
3. 224 liters
4. 32.4 moles
How many moles of methane gas molecules, CH₄, are in 11.2 liters of methane at standard conditions?
1. 0.5 moles
2. 11.2 moles
3. 27.2 moles
4. 179.2 moles
How many moles of argon gas (Ar) are present in 5.6 liters of argon gas at standard conditions?
1. 0.25 moles
2. 5.6 moles
3. 4 moles
4. 28 moles
How many molecules are contained in 3 moles of water molecules, H₂O?
1. 54 molecules
2. 6 molecules
3. 1.8 x 10²⁴ molecules
4. 3 x 10²³ molecules
A sample of carbon dioxide gas (CO₂) contains 6 x 10²² molecules. How many moles of carbon dioxide does this represent?
1. 1/10 mole
2. 10 moles
3. 4.4 moles
4. 440 moles
How many moles of hydrogen molecules (H₂) are present in 9 x 10²³ molecules of hydrogen?
1. 9 x 10²³ moles
2. 1.5 moles
3. 1.8 x 10²⁴ moles
4. 4.5 x 10²³ mole
How many molecules of ammonia are contained in 10 moles of ammonia, NH₃?
1. 6 x 10²⁴ molecules
2. 6 x 10²² molecules
3. 170 molecules
4. 27 molecules
What is the volume occupied by 40 grams of argon gas (Ar) at standard conditions?
1. 1 liter
2. 22.4 liters
3. 6.02 x 10²³ liters
4. 896 liters
What volume, in liters, is occupied by 1.5 x 10²³ atoms of argon gas (Ar) at STP?
1. 0.250 liters
2. 1.5 x 10²³ liters
3. 5.6 liters
4. 89.6 liters
How many molecules of ethane gas, C₂H₆ are in 15 grams of the compound?
1. 0.5 molecules
2. 2 molecules
3. 3 x 10²³ molecules
4. 45 molecules
What is the mass, in grams, of 3 x 10²³ atoms of helium?
1. 1.2 x 10²⁴ grams
2. 3 x 10²³ grams
3. 2 grams
4. 8 grams
Approximately how many atoms of carbon are present in a 120 gram sample of carbon?
1. 6 x 10²⁴ atoms
2. 6 x 10²² atoms
3. 10 atoms
4. 1440 atoms
What volume would be occupied by 120 grams of argon gas (Ar) at standard conditions?
1. 67.2 liters
2. 3 liters
3. 120 liters
4. 0.186 liters