1 Step Conversions
2 Step Conversions
Definitions/History
Percent Composition by Mass
Empirical/Molecular Formulas
100

What is the conversion factor to go from mass to moles?

Molar Mass

100

T/F: You can go from mass to particles in one step.

FALSE

100

What is Avogadro's Number?

6.02 x 1023 

100

All of your percentages should add up to what?

100%

100

T/F: Empirical Formulas are the SIMPLIFIED formulas

True

200

What is the conversion factor to go from moles to particles?

Avogadro's Number

200

What conversion factors would you need to go from mass to particles?

molar mass 

avogadro's number

200

What does mole mean in Latin?

Huge Pile

200

What is the formula to determine percent composition?

Mass of element/molar mass of compound x 100

200

T/F: Ionic compounds have only one possible empirical formula.

True

300

How many moles are in 3.5 L of water?

0.16 mol H2O

300

How many atoms are in 168 g of Barium?

7.36 x 1023 atoms of Barium

300

Define STP

Standard Temperature & Pressure

Temp of 0 degrees C and pressure of 1 atm

300

What is the percent of carbon in Carbonate?

20.01% 

300

What is the empirical formula for a compound that is 82.24% N and 17.76% H?

NH3

400

How many moles are in 2.36 x 1026 formula units of Magnesium Chloride?

392 moles Magnesium Chloride

400

What is the volume of 1.39 x 1023 molecules of water?

5.17 L H2O

400

I earned the Nobel Prize for computing Avogadro's number using many different methods and named this constant in honor of Avogadro. Who am I?

Perrin

400

What is the % of Ba in Barium Nitrate?

52.55% Ba

400

What is the empirical formula for a compound that is 83.7 % carbon and 16.3 % hydrogen?

C3H7

500

How many grams are in 250 moles of Beryllium Phosphate?

54000 g Beryllium Phosphate

500

How many grams are 5.68 x 1024 formula units of NaCl?

551 g NaCl

500

Define what type of particles accompany the different types of bonds.

Ionic = Formula Units

Covalent = Molecules

Element = atoms

500

What is the % of each element in Ni3(PO4)2?

48.11% Ni

16.92% P

34.97% O

500

What is the molecular formula for a compound that is 74.0% C, 8.70% H, and 17.3% N and has a molar mass of 243.39g?

C15H21N3

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