mole/ grams/ particle conversions review

Evelyn, Elijah, and Scarlett are working on a science project. They have 1.01 grams of hydrogen. How many moles of hydrogen do they have for their project?

• 1.0 moles

• 10.00 moles

• 100 moles

• 0.10 moles

Emma, Charlotte, and William are in a chemistry lab. They are given a mole of silver each. Can you tell how much mass does the silver mole that each of them have?

• 32.06 g

• 107.87 g

• 14.01 g

• 22.99 g

Benjamin has 48.86 g of cobalt in his chemistry lab. He wants to know how many moles of cobalt he has. Can you help him?

• 2879 moles

• 8.291 moles

• .8291 moles

• .829 moles

Lily, Elijah, and Harper are working on a science project. They have a water sample weighing 821.3 g. How many molecules of water are in their sample?

• 45.58 molecules

• 8.232 x 10²⁵ molecules

• 8.909 x 10²⁷ molecules

• 2.744 x 10²⁵ molecules

Harper, Lily, and Benjamin are working on a science project. They have a sample of Zn atoms weighing 4.98 x 10²⁴. Can you help them figure out the mass of this sample?

• 541 g

• 8.27 g

• .122 g

• 4.59 x 10⁴⁶ g

Noah, Charlotte, and Kai are working on a chemistry project. They have a 321.8 g sample of sodium chloride. How many moles does this sample contain?

• 18810 moles

• 3.315 x 10²⁴ moles

• 5.507 moles

• 4.767 moles

Benjamin is working on a science project and he has a 25.69 g sample of calcium chloride. Can you help him figure out how many molecules are in his sample?

• 1.394 x 10²³ molecules

• 2851 molecules

• .2315 molecules

• 3.845 x 10²⁵ molecules

Tags

NGSS.HS-PS1-7

Grace, Olivia, and Maya are working on a chemistry project. They have 86.235 g of diphosphorus pentaoxide and they need to convert it to moles for their experiment. How many moles do they have?

• 12240 moles

• 1.8747 moles

• .608 moles

• .60755 moles

Tags

NGSS.HS-PS1-7

Aiden, Abigail, and Anika are working on a science project. They have a 456 g sample of carbon dioxide. They want to know, how many atoms are contained in their sample?

• 10.34 atoms

• 6.237 x 10²⁴ atoms

• 1.871 x 10²⁵atoms

• 2.079 x 10²⁴ atoms

William, Charlotte, and Benjamin are working on a science project. They have 9.76 x 10²² molecules of SrCl₂. They need to know the mass of these molecules for their project. Can you help them find out?

• .1622 g

• 25.7 g

• 20.0 g

• .3589 g