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Compounds
Miscellaneous

Calculations
Reactions
Periodic Table
100
TRUE or FALSE 

The formula, C14H10O4, is an empirical formula. 

False 

Actual empirical formula: C7H5O2

100

TRUE or FALSE 

Oxidation is the gain of electrons. 

False

100

TRUE or FALSE

The theoretical yield can be calculated from any reactant.

False

100

Balance the following equation: 

K + CuCl2 -> Cu + KCl

2 K +CuCl2 -> Cu + 2 KCl

100

TRUE or FALSE 

One mole of Carbon will always have a mass of 12.01g. 

True
200

What is the central atom in CH2O?

C

200

Positively charged ions are called _____

Cations
200
Calculate the molarity of a solution that contains 569 g NaOH (s) per liter of solution.

14.2 M

200

Classify the following reaction: 

CaCO3 (s) -> CaO (s) +CO2 (g)

Decomposition 

200

Calculate the number of neutrons in the following isotope:

bromine-81

46

300

Which of the following are compounds? 

N2O,  H2O,  O,  Br2,  C8H10N4O2

N2O,  H2O,  Br2,  C8H10N4O2

*50 bonus point if anyone knows what this compound C8H10N4O2 is*

300

TRUE or FALSE

Radio waves have a longer wavelength and smaller frequency compared to gamma rays.

True

300

How many significant figures are appropriate to show in the result? 

(13.2+0.537) ÷ 100.078

Three 

= 0.137 

300

Which of the following compounds are are insoluble?

 A. Co3(PO4)2      B. Pb(NO3)2      C. CuCO3

A and C

300

How many valence electrons does Carbon have? 

4

400

What is the formula for Copper (II) Chloride?

CuCl2

400

Which element(s) would have 2 electrons in its Lewis dot structure? 

Br, Ne, Mg, O, Ba

Mg and Ba

400

How many moles are in 22.7g of silver (Ag)? 

Molar mass of Ag = 107.9 g/mol

0.21 mol Ag

400

What would be the products in this precipitation reaction? 

AgNO3 (aq) + KCl (aq) -> ??

AgCl (s) + KNO3 (aq)

400

What is the electron configuration for Cl? Use noble gas notation. 

[Ne]3s23p5

500

Name the compound: P2O4

diphosphorus tetroxide

500

What is the Molecular Geometry of CO2?

Linear

500

How many molecules of NH4Br are in 4.246 g of NH4Br?

2.611x1022 molecules of NH4Br

500

What is the net ionic equation for this reaction? 

MgCl2 (aq) + AgNO3 (aq) -> AgCl (s) + Mg(NO3)2


Ag+ (aq) + Cl- (aq) -> AgCl (s)

500

How many unpaired electrons does Fe (Iron) have? 

4