CHEM 105 Fun

Molar Mass

100

Calculate the molar mass of carbon dioxide

44.01 g/mol

200

The units for this term are g/mol

What is molar mass

300

The molar mass of 2Na₂O

2x(23x2 + 16) = 2x62g = 124g

400

What is the molar mass of (NH₄)₃PO₄?

149.1 g/mol

500

Calculate the molar mass of sodium chloride

58.5 g/mol

Grams - Moles

100

When converting from Mass (grams) to Moles you use the conversion factor _______.

1 mole / molar mass

200

When converting from Moles to Mass (grams) you use the conversion factor ______.

molar mass / 1 mole

300

How many moles are in 3.25 gr of sodium?

0.141 mol of Na

400

How many grams are in 8.23 moles of CaCl₂ ?

914 grams of CaCl₂

500

The number of moles in 25 grams of KMnO₄ is

0.158 moles of KMnO₄

Avogadro's Number

100

What is Avogadro's Number?

6.02 x 10²³

200

This equals 6.02 x 10²³ atoms or molecules

What is a mole?

300

How many moles are in 3.2 x 10²⁴ atoms of Cl?

5.3 moles of Cl

400

How many molecules are in 6.5 moles of water?

3.9 x 10²⁴ molecules H₂O

500

Is there more or less than one mole in 6.87 x 10²² atoms of hydrogen?

less

Random

100

In Munich, about 1.3 million gallons of beer are poured during this festival that kicks of in autumn.

What is Oktoberfest?

200

Leaves change color in the fall because of lack of sun and the cold stops the production of this chemical that makes the leaves green. What is the name of the chemical?

Chlorophyll

300

You know it is fall when Starbucks starts selling this type of coffee flavoring?

Pumpkin Spice

400

What is the chemical formula for table salt?

NaCl

500

The most prominent mineral we get from bananas is?

Potassium