Atoms to Moles

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5.00 moles

How many moles is 12.5 x 10²³ atoms of an unknown compound?

• 2.08mol

• 6.02x10²³mol

• 2.08x10²³mol

• 12.5mol

What is Avogadro's Number? 

• 6.02 x 10²³

• - 6.02 10²³

• 6.02 x 10²²

• 6,020,000,000,000

Tags

NGSS.HS-PS1-7

How many Carbon Atoms are in 4 moles of Carbon?

• 6.02 x 10²³

• 1.33 x 10²³

• 4.52

• 2.408 x 10²⁴

Calculate the number of atoms in 0.0340 g Zn.

• 5.200 x 10^-4 atoms Zn

• 3.130 x 10²³ atoms Zn

• 3.130 x 10²⁰ atoms Zn

• 1 atom Zn

Tags

NGSS.HS-PS1-7

How many moles are 2.85 x 10²⁰ atoms of iron?

• 4.73 x 10^-4 moles

• 1.72 x 10⁴ moles

• 1.72 x 10^-42 moles

• 4.73 x 10⁴ moles

Which of the following statements regarding the mole is INCORRECT?

• A mole is a unit of quantity equal to 6.02 x 10²³ particles.

• The number of particles in a mole is known as Avogadro’s number.

• A mole of particles of an element is numerically equal to the atomic mass of the element.

• none of the above

How many moles are in 5.00 x 10^24 atoms of helium?

• 8.31 moles

• 0.83 moles

• 83.1 moles

• 8.31 x 10^23 moles

If you have 1 mole of carbon atoms, how many atoms do you have?

• 6.02 x 10^23 atoms

• 1.00 x 10^23 atoms

• 12.01 x 10^23 atoms

• 3.01 x 10^23 atoms

What is the mass of 2 moles of water (H2O)?

• 36 grams

• 18 grams

• 72 grams

• 9 grams