Chemistry

Nomenclature

100

H₂CO₃(aq)

What is carbonic acid

200

AuPO₄

What is Gold (III) Phosphate

300

NaCl

what is Sodium Chloride

400

Dihydrogen Phosphite 

what is H₂PO₃ ?

500

HC₂H₃O₂(aq)

what is Acetic acid

Balancing

100

Balance this Reaction: 

____N₂ + ____ H₂ -----> ____ NH₃

what is 1,3,2

200

Balance this question: 

____ Na₃PO₄ + ____ CaCl₂ ----> ____ NaCl + ____ Ca₃(PO₄)₂

2,3,6,1

300

balance this reaction:

____ AgNO₃ + ____ Cu ---> ____ Cu(NO₃)₂ + ____ Ag

2,1,1,2

400

Balance this equation: 

___C₂H₅OH(l) + ___O₂(g)→___CO₂(g)+____H₂O(g)

1,3,2,3

500

Balance this Reaction:

___C₈H₁₈ + ___O₂ ---> ___H₂O + ___CO₂ 

2,25,16,18

Significant Figures

100

0.00000400

what is 3 sig figs

200

2.1390

what is 5 sig figs 

300

5.9 x 10⁴

what is 2 sig figs 

400

678.02400

what is 8 sig figs 

500

3.85 x 10^-18 / 7.35 x 10^-36 = answer given in sig figs 

5.24 x 10¹⁷  what is 3 sig figs 

Charges and Balanced Formulas

100

Na^x

what is +1

200

make a compound using Fe²⁺ and hydroxide 

what is Fe(OH)₂

300

the charge of zinc

what is positive 2

400

create a compound containing Aluminum and chloride 

what is AlCl₃

500

charge of dichromate 

what is negative 2 

Stoichiometry

100

How many kilograms are in 3.7 moles of Na₂O?

0.230 kg Na₂O

200

what is the molar mass of Barium Dichromate?

353.31 g/mol

300

Using the following equation: Pb(SO₄)₂ + 4 LiNO₃ ----> Pb(NO₃)₄ + 2 Li₂SO₄ 

How many grams of lithium nitrate will be needed to make 250 grams of lithium sulfate?

what is 314 g LiNO₃

400

given the equation: 2 N₂H₄(l) + N₂O₄(l) ---> 3 N₂(g) + 4 H₂O(g)

How many moles of dinitrogen tetroxide are required to produce 57 moles of nitrogen?  

what is 19 mol N₂O₄

500

What are the number of moles of Hydrogen in 158 grams of Ammonium Bicarbonate?

What is 10 moles