Practice Test 1
Supplemental Instruction
Iowa State University / Leader: / Sparsh
Course: / CHEM 177
Instructor: / Dr. Anand
Date: / 2/7/2018

1.  You weigh a container and its mass is 64.3 grams. It is then filled with water and its new mass is 114.9 grams. What is the volume of the container?

a.  51 mL

b.  50.6 cm3

c.  50.69 cm3

d.  50 mL

2.  What is the molar mass of propanol?

a.  44 g

b.  46 amu

c.  60 g

d.  46 g

e.  60 amu

3.  What is the sum of all the coefficients after the equation is balanced? __H3PO4 + ___Mg(OH)2 à __Mg3(PO4)2 + ___H2O

a.  11

b.  12

c.  13

d.  14

4.  Which of the following acid’s name and formula is NOT correctly paired?

a.  HCl Hydrochloric acid

b.  H2SO3 Persulfuric acid

c.  H2CO3 Carbonic Acid

d.  HNO2 Nitrous Acid

e.  H3PO4 Phosphoric acid

5.  What is the chemical formula for the ionic compound form from the stable ion of Barium and Arsenic?

a.  BaAs3

b.  Ba2As3

c.  Ba3As2

d.  BaAs2

e.  BaAs

6.  Wine is a ______

a.  Pure substance

b.  Homogeneous mixture

c.  Heterogeneous mixture

d.  Compound

7.  Which of the following are chemical properties?

I. flammable

II. reacts with O2

III. melting point at 400 K

a.  I only

b.  I and II

c.  II and III

d.  I and III

e.  All of them are

8.  What is NOT a diatomic element?

a.  Nitrogen

b.  Chlorine

c.  Flourine

d.  Carbon

e.  Hydrogen

9.  Name a metalloid

10.  Name all the alkaline earth metals

11.  There are 2 isotopes of Sodium 22Na and 23Na. Their percent abundance is 1.02% and 98.98 % respectively, what is its atomic mass (ignore sig figs)?

12.  You run a 5.0k race in 32 min, what speed were you going in miles/hour (1600 meters in a mile)

13.  If 50. g of sulfur dioxide (mm=64.07) reacts with 25 grams of water (mm=18.02) to for sulfurous acid (mm=82.07)

a.  What is the chemical equation?

b.  What is the limiting reagent?

c.  If the volume of sulfurous acid is 40 cm3 what is the density?

14.  Fill in the table:

symbol / 19F1- / Cr
Protons / 16
Neutrons / 16 / 28
Electrons / 16
Charge / 2+

15.  Fill in the blanks in the table:

Compound name / Compound formula / Ionic, covalent,ion or acid?
Manganese(III) oxide
diphosphorus pentoxide
Ammonium Phosphate
Acetate Ion
H2S (aq)
CN-
ZnSO3
AlCl3
KClO
Copper (II) Cyanide
Ammonium Bicarbonate
Lead (IV) Sulfide
Mg(NO2)2
  1. Find the Empirical Formula for an unknown compound with 40.92% C, 4.58% H, and 54.50% O by mass.

17. 

(a)  How many atoms of C are contained in 1 mole of C2H4?

(b)  How many atoms of H are contained in 1 mole of C2H4 ?

(c)  How many molecules of CO2 are contained in 8.00g of CO2 ?

(d)  What is the mass (in g) of 6.02 x 1022 molecules of CO2 ?