Moles in Chemistry

What is a mole?

100

A mole is used in what kind of science?

Chemistry

200

A mole is a ______

Unit

300

What's the unit abbreviation for a mole?

mol

400

The mole is the SI Unit for the _________ of a chemical substance.

The amount of a chemical substance

500

Who is the mole named after?

Avagadro

Terms & Quantities

100

How much is a dozen?

12

200

How much is a century?

100

300

What is the molar mass of Carbon monoxide (CO)?

~28.01 grams

400

How many atoms are in a mole?

6.02 E23 atoms/molecules/particles

500

How many grams are in a mole?

the mass # from the periodic table

True or False

100

One mole of water and one mole of glucose have the same mass. True or False?

False.

200

One mole of hydrogen contains the same number of molecules as one mole of carbon dioxide. True or False?

True.

300

One mole of hydrogen contains the same number of grams as one mole of carbon dioxide. True or False?

False

400

There are more atoms in 12 grams of carbon than in 12 grams of copper. True or False?

True.

500

The Italian physicist that helped discover the use of a mole is Benjamin Franklin. True or False?

False. It was Amedeo Avogardo.

Calculation

100

What is the molar mass of AuCl3

303.6 g AuCl3

200

Why is the boiling point of PH3 lower than that of NH3?

1.  Van der Waals' forces are weaker in PH3 than in NH3.
2. PH3 is non-polar, while NH3 is polar.
3. NH3 is hydrogen bonded, while PH3 is not hydrogen bonded.

3.   NH3 is hydrogen bonded, while PH3 is not hydrogen bonded.

300

How many atoms are in 3.5 moles of arsenic atoms?

2.1x10²⁴ atoms As

400

How many moles of sodium oxide, Na2O are in 310 grams of the compound

5 moles Na2O

500

Which compound contains both ionic and covalent bonds?

H₂CO₂

NH₄Cl

HCl

NH₄Cl

Yes or no

100

Is their more than one definition for the word "mole"?

Yes

200

1. Which is the correct description of polarity in F2 and HF molecules?

   1. Both molecules contain a polar bond.
   2. Both molecules are polar.
   3. Only one of the molecules is polar.
   4. Neither molecule contains a polar bond.

3. Only one of the molecules is polar

300

1. When a chlorine atom becomes a chloride ion

   1. it loses one electron.
   2. its mass number changes.
   3. it shares one electron with another chlorine atom.
   4.  it gains one electron.

 it gains one electron.

400

1. A covalent bond would be expected to form between atoms which have the electron configurations

   1. 2,7 and 2,6
   2. 2,8,5 and 2,8,8,1
   3. 2,8,1 and 2,8,7
   4. 2,8,8 and 2

3. 2,8,1 and 2,8,7

500

1. What are valence electrons?

   1. Electrons in the highest main energy level
   2. The number of electrons required to complete the highest main energy level
   3. The total number of electrons in the atom
   4. Electrons in the energy level closest to the nucleus

1. Electrons in the highest main energy level