Introduction to Moles

Math Response

What is Avogadro's number?

Type answer here

Correct Answer: 6.022\times10^{23}

Deg^°

Rad

Multiple Choice

Avogadro came up with Avogadro's Number.

• True

• False

Multiple Choice

How many atoms of iodine are in a mole of iodine?

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

Multiple Choice

How many particles would be in 8.4 moles of Octane (C₈H₁₈)?

• 5.77 x 10²³
• 5.04 x 10²⁴
• 5.77 x 10²⁶
• 5.04 x 10²³

Multiple Choice

How many molecules are there in 5.5 moles potassium chloride?

• 4.08 x 10^-24

• 3.31 x 10²⁴

• 33.11

• 0.98

Multiple Choice

How many students are there in 31.8 moles of students?

• 5.28 x 10^-23 students
• 1.91 x 10²⁵ students
• 5.28x 10-²⁵  students
• 1.91 x 10²² students

Multiple Choice

Find the mass of 11.37 mol of BaO. Round to the nearest whole number.

• 1,354 g

• 1,740 g

• 17.40 g

• 1,684 g

Multiple Choice

Determine the amount of moles in CuBr that are in 276.9 g of the compound.

• 3.2 mol

• 1.7 mol

• 2.1 mol

• 1.9 mol

Multiple Choice

Find the mass of 3.6 mol of Au.

• 843.6 g

• 709.2 g

• 435.9 g

• 196.9 g

Multiple Choice

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 101.75 g
• 121.75 g
• 111.75 g
• 131.75 g