Unit 8 Review

One mole of Chromium contains ____.

• 51.97 x10^23 atoms

• 2.06 x10^23 atoms

• 6.02 x10^23 atoms

• 12.04 x10^23 atoms

The mass of one mole of Ca(NO₃)₂ is ___.

• 134 grams/mole

• 199 grams/mole

• 148 grams/mole

• 164 grams/mole

The percent of Aluminum found in Al2(SO₄)₃ is ___.

• 7.89%

• 15.77%

• 84.23%

• 92.11%

The mole is based on the mass of 12 grams of ___.

• hydrogen

• oxygen

• nitrogen

• carbon

How many moles are equal to 4.0x10²³ atoms of Germanium?

• 0.66 mole

• 1.00 mole

• 1.66 mole

• 6.02 mole

How many moles are contained in 36.0 g of Be?

• 0.25 moles

• 4.0 moles

• 45.0 moles

• 320 moles

How many atoms are in 0.075 mol of Titanium?

• 4.5 x10^22

• 1.2 x10^-25

• 3.6 x10^21

• 6.4 x10^2

What is the mass of one mole of (NH₄)₂CO₃?

• 144 g

• 138 g

• 96 g

• 78 g

In which of the following molar quantities of sulfur (S) would 8.13 x10^23 atoms of sulfur be present?

• 1.15 moles S

• 1.25 moles S

• 1.35 moles S

• 1.45 moles S

Avogadro's number of phosphorous (P) atoms would have a mass of ___.

• 6.02 x10^-23 grams

• 6.02 x10^23 grams

• 15.0 grams

• 31.0 grams