A-MOLE-IN-ONE

VOCABULARY

100

this a statement that tells us the relative amount of each element in a compound 

percennt composition

200

There are a specific number of particles in one mole of a substance (give the NUMBER and NAME of number

What is 6.02x10²³ and Avogadro's Number

300

gives the lowest whole number ratio of the atoms of an element within a molecular compound

What is empirical formula

400

gives the actual number of atoms of each element within a molecular compound

What is molecular formula

500

What are the two things you need to know to calculate the molecular formula from the empirical formula 

molar mass of EF and MF

MOLAR MASS

100

Calculate the molar mass of SO₃

What is 80.06g

200

Calculate the molar mass of KClO₃ 

What is 122.55g

300

calculate the molar mass of Ca₃(PO₄)₂

What is 310.18g

400

calculate the molar mass of C₆H₁₂O₆

What is 180.16 g

500

Calculate the molar mass of ammonium (NH₄)₂HPO₄

What is 132.06

MOLE CONVERSIONS

100

How many grams of KClO₃ are in 3.35 moles of NaCl? MM: 58.44 g

What is 204.54

200

How many grams are in 12.8 moles of O₂?

What is 409.6g

300

How many molecules are in 1.74 moles of methane (CH₄)

What is 1.05x10²⁴ molecules

400

You need 250g of table sugar, or sucrose, C₁₂H₂₂O₁₁ to bake a cake. How many sucrose molecules will be in the cake? Sucrose has a molar mass of 342.3 g/mol

What is 4.4x10²³ molecules

500

An extra strength aspirin tablet contains 5.0x10²² atoms of aspirin (C₉H₈O₄) What is the mass of aspirin in one tablet?  

What is 15g

MISC PAST REVIEW

100

What is the percent composition of each element in the water molecule?

What is 11% H and 88.8% O

200

How many CO₂ molecules are in 12.4 moles 

7.5 X 10^24

300

What is the FORMULA of calcium phosphate

Ca₃(PO₄)₂

400

What is the name of group 17 on the periodic table

Halogens

500

What is the scientific name of OF₂

oxygen difluoride

EMPIRICAL/MOLECULAR FORMULA

100

Aspirin is 60.0% C, 4.5% H, and 35.5% O. Calculate its empirical formula.

What is C₉H₈O₄

200

The insecticide lindane contains 24.78% C, 2.08% H, 73.14% Cl. What is the EF?

What is CHCl

300

The empirical formula of a compound is BH₂N. If the molecular formula molar mass is 80g/mol? What is the molecular formula?

B(3)H(6)N(3)

400

The percent of composition of caffeine is 49.5% C, 5.20% H, 16.4% O, and 28.9% N. What is the Empirical formula?

What is C4 H5 O N2

500

A compound contains 63.1% Carbon, 12.4% hydrogen, and the rest is nitrogen.  Determine the molecular formula if its molar mass is 114.22 g/mol

C₆H₁₄N₂