Exam 1
Exam 2
Exam 3
Exam 4
CH 9 and 10
100

219.23 g - 1.9 g +1.009 g = ?

218.3 g

100

If 58 g of butane burns, it will react with 102 g of oxygen and forms 78 g of water and how much carbon dioxide?

82g carbon dioxide 

100

What is the formula for this compound, copper(I) perbromate 

CuBrO4

100

If the theoretical yield of a rxn is 24.8g and the actual yield is 18.5g, what is the percent yield?

74.6%

100

Draw the structure for N2H4, state its electron & molecular geometry and if it is polar or non polar  

Tetrahedral, Trigonal Planar 

Polar 

200

How many kL are contained in 456,000 nL

4.56 x 10-7 nL

200

Convert 130.9 °F to °C

°F =[(1.8)(°C)] + 32

54.9 °C

200
A sample of water, H2O is analyzed. It is found to contain a total of 19.6g of hydrogen. How many grams of oxygen does it contain? 

x = 156 g O

200

Balance this rxn:

Al (s) + S8 (s) --> Al2S3 (s) 

16 Al (s) + 3S8 (s) --> 8Al2S3 (s)

200

Draw the Lewis structure for BH3, state its molecular and electron geometry and state if it is polar or nonpolar.

Trigonal planar

Nonpolar

300

0.31 L --> in3

19 in3

300

Convert 2.75 x 104 kJ to calories

1 cal = 4.184 J

6.57 x106 cal

300
What is the name of this compound, PbO2​​​​

lead(IV)oxide 

300

Write balanced complete ionic and net ionic equations for this rxn 

AgNO3(aq) + KCl(aq) → AgCl(s) + KNO3(aq)

complete ionic: Ag+(aq) + NO3- (aq) + K+(aq) + Cl-(aq) → AgCl(s) + K+(aq) + NO3-(aq) 

Net ionic: Ag+(aq) + Cl-(aq) → AgCl(s) 

300

Rank these EMR waves from shortest to longest wavelengths:

- Ultraviolet 

- orange light 

- Microwaves 

- Radio waves 

- Gamma rays 

- x-rays 

gamma rays, x-rays, ultraviolet, orange light, microwaves, radio waves

Shortest ---> longest wavelength  

400

15,615 dm3 --> in3

9.5289 x 105 in3

400

What is the temperature change in 355g of water upon absorption of 3.4 x 104 J of heat? The specific heat of water is c = 4.18J/g°C

q=mcΔT

 23°C

400
What is the name of HPO32-?

hydrogen phosphite ion 

400

write out this rxn: 

sodium solid reacts with aqueous copper(II) nitrate -->

Na (s) + Cu(NO3)2 (aq) --> 2NaNO3 (aq) + Cu (s) 

400
Write the full electron configuration for Li

1s22s1

500

(1.40 x 103 cm2 - 5.33 x 102 cm2)/ 3.50 cm

2.5 x 102 cm

500

Gallium has two naturally occurring isotopes: 

Ga-69 with a mass of 68.9256 amu and a natural abundance of 60.11% 

Ga-71 with mass 70.9247 amu and a natural abundance of 39.89% 

Calculate the atomic mass of gallium. 

69.72 amu

500

A student has 5.20 x 1021 particles of Al2(SO4)3. How many moles of sulfate ions are in this sample? 

2.59 x 10-2 mol SO42-

500

135.8g of NaCl are reacted with 195.7 g of Pb2+, determine the limiting reactant and the theoretical yield of PbCl2 in grams 

Pb2+(aq) + 2NaCl(aq) ---> PbCl2(s) + 2Na+(aq)

Pb2+ = LR 


Theoretical Yield = 262.7 g PbCl2

500

Write the electron configuration for Zn

[Ar] 4s23d10

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