Unit 8 (molar mass, Avogadro's number, mole conversions)

Molar Mass

100

Find the molar mass of antimony

Sb=122 g/mol

200

Find the molar mass of chlorine gas

Cl₂=70 g/mol

300

Find the molar mass of (NaCl)₂

116 g/mol

400

Find the molar mass of C₆H₁₂O₆

180 g/mol

500

Find the molar mass of Cr₄(P₂O₇)₃

730 g/mol

Vocab

100

A mol is a ___________ in chemistry.

counting unit

200

A unit that connects mass of a substance to mols is _____

molar mass

300

(2 parts) 1 mol is equal to _______, which is also called _________

6.02 x 10²³ particles, Avogadro's number

400

What units does Avogadro's number help us convert between?

Moles and number of particles

500

What method do we use to convert between different units?

Dimensional analysis

Mole Conversions

100

Find the mass of 12 mols of CO₂

528g CO₂

200

How many mols are there in 19.1g of NaNO₃?

0.225 mols NaNO₃

300

Find the number of molecules in 8.9 mol of Mg₃N₂

5.36 x 10²⁵ molecules Mg₃N₂

400

Find the mass of 5.2 x 10²² molecules of NO₃

5.355g NO₃

500

How many molecules are in 13.7g of Mg(OH)₃?

1.1 x 10²³ molecules Mg(OH)₃

Mole Conversions

100

Find the mass of 0.66 mols of O

10.56g O

200

Find the number of molecules in 2.63 mol of AlF₃

1.58x10²⁴ molecules AlF₃

300

How many mols are in 6.12 x 10²² molecules of ZnO?

0.1 mol ZnO

400

How many molecules are in 15.8g CO₂?

2.16 x 10²³ molecules CO₂

500

Find the mass of 8.36 x 10²⁴ molecules of Ba₃(PO₄)₂

8346.11 g Ba₃(PO₄)₂

Mole Conversions

100

How many mols are there in 127.5g of H₂O?

7.083 mol H₂O

200

How many mols are in 3.25x10²¹ molecules of CH₄?

0.0054 mol CH₄

300

How many particles are in 72.8g of astatine?

2.09 x 10²³ particles At

400

Find the mass of 7.02 x 10²¹ molecules of NaHCO₃

0.98g NaHCO₃

500

What is the significance of the mole map?

It shows the conversion factors needed to convert between mass, number of particles, and mols.