CP Chemistry Chapter 10 Review

The mass of one mole of substance is called...

• molecular mass
• mole constant
• molar mass
• atomic weight

How many particles are in a mole?

• 602
• 602 million
• 602 moles
• 6.02 x 10²³

Which compound below has the smallest molar mass?

• CO

• CO₂

• H₂O

• H₂O₂

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³

• 146

• 4.15

• 1.51x10²⁴

Find the percent composition of hydrogen in (NH₄)₂S.

• 11.8%
• 41.1%
• 47.1%

How many moles are in 98.3 g of Aluminum Hydroxide (Al(OH)₃)?

• 2.14 mol
• 1.26 mol
• 6.63 mol
• 5.9 mol

Copper (Cu) is a transition element used in the making of coins. Calculate the mass in grams of 0.0420 moles of copper.

• 0.00697 g
• 0.252 g
• 2.67 g
• 6.61 g

Given 3.99 x 10²² molecules of Cl₂ gas, convert to Liters.

• 5.38 x 10⁴⁷ Liters Cl₂
• 2.96 Liters Cl₂
• 1.07 x 10⁴⁵ Liters Cl₂
• 1.48 Liters Cl₂

What percent of CuCl₂ is Cu?

• 47.27%
• 52.73%
• 89.63%
• 33%