Random
Balancing Equations
Percent Composition
Molar Mass
Moles
100

The atomic mass of Bromine

What is 79.9 g

100

In the equation Na + Cl -> NaCl, what are the reactants?

Na and Cl

100

What is the percent composition of H in HCl?

2.7%

100

What is the Molar Mass of NaCl?

58.5 g/mol

100

What does a mole measure?

Representative particles within elements or compounds

200

What is 1/4 written as a percent?

25%

200

Balance the following equation:

NH4NO3 -> N2O + H2O

NH4NO3 -> N2O + 2 H2O

200

What is the percent composition of Na in NaCl?

39.3%

200

What is the molar mass of CO2?

44 g/mol

200

How many atoms are in 1 mole?

6.02*1023

300

What is the atomic mass of Manganese?

54.9g

300

Balance the following reaction

P4O10 + H2O -> H3PO4

P4O10 + 6 H2O -> 4 H3PO4


300

What is the percent composition of Cu in CuBr2?

28.6%

300

What is the molar mass of NaOH?

40 g/mol

300

How many particles are in one mole of CuBr2?

6.02*1023

400

What is 1/3 written as a percent?

33.3%

400

balance the following

 Al + H2SO4 -> Al2(SO4)3 + H2

2 Al + 3 H2SO4 -> Al2(SO4)3 + 3 H2

400

What is the percent composition of Br in CuBr2?

71.4%

400

What is the molar mass of CaBr2?

200 g/mol


400

 How many atoms are in 2 moles of Na?

12.04*1023

500

Approximately what percent of gum is comprised of sugar?

50%

500

Balance the following equation: 

KClO3 -> KCl + O2

2 KClO3 -> 2 KCl + 3 O2

500

What is the percent composition of O in NaOH?

40%

500

What is the molar mass of (NH4)2S?

68 g/mol

500

How many moles are in 18.06*1023 atoms of NaCl?

3 moles

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