Particles and Moles

How many formula units are in 2.5 mol of NaCl?

• 1.51 x 10²³ formula units

• 146 formula units

• 4.15 formula units

• 1.51 x 10²⁴ formula units

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules

• 180 molecules

• 180.156 g

• 6.02 x 10²³ molecules

How many atoms of carbon are in 6.00 g of carbon?

• 3.61x10²⁴ atoms C

• 6.02x10²³ atoms C

• 3.01x10²³ atoms C

• 9.97x10^{24 ;}atoms C

How many grams are in 1.20 x 10²⁴ molecules of CO?

• 7.22 x 10 ⁴⁷ grams

• 55.8 grams

• 3.36 x 10²⁵ grams

• 1.99 grams

Tags

NGSS.HS-PS1-7

How many "boxes" are in a mass to mole conversion? (when using the factor label method)

• 1

• 2

• 3

• 4

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 moles

Tags

NGSS.HS-PS1-7

If an atom of fluorine has an atomic mass of 19.00 amu, it has a molar mass of ____

• 19 lbs

• 19 kg

• cannot be determined

• 19 g/mol

What are the units for molar mass?

• kg

• amu

• grams/mole

• liters

What is the molar mass of table salt (NaCl)?

• 116.88 g/mol

• 35.45 g/mol

• 22.99 g/mol

• 58.44 g/mol

What is the mass of 0.89 mol of CaCl₂?

• 110 grams

• 0.0080 grams

• 99 grams

• none of the choices