Moles Convesions

Question 1

What is the formula to convert mass to moles?

Answer 1

Moles = Mass (g) / Molar Mass (g/mol)

Question 2

True or False: To convert moles to mass, you multiply the number of moles by the molar mass.

Answer 2

True

Question 3

Fill in the blank: The molar mass of water (H2O) is ____ g/mol.

Answer 3

18.02

Question 4

If you have 36 grams of glucose (C6H12O6), how many moles do you have? (Molar mass of glucose = 180 g/mol)

Answer 4

0.2 moles

Question 5

What unit is used to express the amount of substance in moles?

Answer 5

Mole (mol)

Question 6

What is STP in the context of gas volume?

Answer 6

STP stands for Standard Temperature and Pressure, typically 0 degrees Celsius and 1 atmosphere of pressure.

Question 7

How many liters of gas are in one mole at STP?

Answer 7

One mole of gas occupies 22.4 liters at STP.

Question 8

True or False: 1 mole of any gas at STP has the same volume.

Answer 8

True.

Question 9

What formula is used to convert volume of gas at STP to moles?

Answer 9

Moles = Volume (liters) / 22.4 liters.

Question 10

Fill in the blank: At STP, 22.4 liters of gas corresponds to ____ moles.

Answer 10

1 mole.

Question 11

If you have 44.8 liters of gas at STP, how many moles do you have?

Answer 11

2 moles.

Question 12

What is the volume of 3 moles of gas at STP?

Answer 12

67.2 liters.

Question 13

Which gas law relates to the behavior of gases at STP?

Answer 13

Ideal Gas Law.

Question 14

True or False: The volume of gas changes with temperature and pressure.

Answer 14

True.

Question 15

How do you convert moles of gas to volume at STP?

Answer 15

Volume (liters) = Moles × 22.4 liters.

Question 16

If you have 0.5 moles of gas, what is the volume at STP?

Answer 16

11.2 liters.

Question 17

What is the volume of 5 moles of gas at STP?

Answer 17

112 liters.

Question 18

Fill in the blank: The volume of gas at STP is ____ times the number of moles.

Answer 18

22.4.

Question 19

True or False: Different gases occupy different volumes at STP.

Answer 19

False.

Question 20

What happens to the volume of gas if the temperature increases while pressure is constant?

Answer 20

The volume increases.

Question 21

What is the relationship between moles and volume at STP?

Answer 21

Directly proportional; as moles increase, volume increases.

Question 22

If a gas occupies 33.6 liters at STP, how many moles does it contain?

Answer 22

1.5 moles.

Question 23

How many liters are in 4 moles of gas at STP?

Answer 23

89.6 liters.

Question 24

True or False: At STP, 10 moles of gas occupy 224 liters.

Answer 24

False; it occupies 224 liters.

Question 25

What is the conversion factor from liters to moles at STP?

Answer 25

1 mole per 22.4 liters.

Question 26

If you have 2.24 liters of gas at STP, how many moles do you have?

Answer 26

0.1 moles.

Question 27

What unit of measurement is used for gas volume at STP?

Answer 27

Liters.

Question 28

Fill in the blank: The molar volume of an ideal gas at STP is ____ liters.

Answer 28

22.4.

Question 29

If a gas has a volume of 45.6 liters at STP, how many moles does it contain?

Answer 29

2 moles.

Question 30

What is the standard pressure in atmospheres at STP?

Answer 30

1 atmosphere.