General Chemistry Molar Conversions

When converting from a mass to a number of atoms, you should use which of the following numbers?

(check as many boxes as you'll need)

• 6.02 x 10²³

• a number calculated using the periodic table

• 24

Tags

NGSS.HS-PS1-7

How many moles of water do you have if you have 9.03 x 10²³ molecules of water? (Just write the number, don't include any units even though you always should on anything you turn in. Also, if the answer is in scientific notation, write it with the carot symbol and no spaces... for example you should write 6.02 x 10²³ as 6.02x10^23.)

How many formula units of potassium oxide are there in 23.5 grams of potassium oxide? (Just write the number, don't include any units even though you always should on anything you turn in. Also, if the answer is in scientific notation, write it with the carot symbol and no spaces... for example you should write 6.02 x 10²³ as 6.02x10^23.)

Tags

NGSS.HS-PS1-7

What is the mass of 1 mole of sodium carbonate?

• 99 grams

• 83 grams

• 106 grams

• 122 grams

Which of the following weighs the most?

• mole of ammonia

• mole of methane

• mole of sulfur dioxide

• mole of hydrogen peroxide

Which of the following contains the greatest number of atoms?

• 10 grams of Helium

• 10 grams of Neon

• 10 grams of oxygen

• 10 grams of nitrogen

When converting from a number of grams to a number of moles, you should use which of the following numbers?

(check as many boxes as you'll need)

• 6.02 x 10²³

• a number calculated using the periodic table

• 24

When converting from the volume to the mass of a gas at RTP, you should use which of the following numbers?

• 6.02 x 10²³

• a number calculated using the periodic table

• 24

What is the mass of 0.64 moles of limestone? (Just write the number, don't include any units even though you always should on anything you turn in. Also, if the answer is in scientific notation, write it with the carot symbol and no spaces... for example you should write 6.02 x 10²³ as 6.02x10^23.)

How many moles of oxygen does 80 grams of oxygen represent? (Just write the number, don't include any units even though you always should on anything you turn in. Also, if the answer is in scientific notation, write it with the carot symbol and no spaces... for example you should write 6.02 x 10²³ as 6.02x10^23.)

Tags

NGSS.HS-PS1-7