CHEM 300 Test 1

DA

100

Convert 500 centimeters (cm) to meters (m).

5.00 m

200

Convert 3.5 hours into seconds.

1.2*10^4 seconds

300

A car is traveling at a speed of 80 kilometers per hour (km/h). Convert this to meters per second (m/s).

2.2*10^1m/s

400

The density of a substance is 1.2 g/mL. Convert this to kg/m^3. 

1cm^3=1ml

1.2*10^3 kg/m^3  

500

A car has a fuel efficiency of 25 miles per gallon (mpg). If the car is traveling at a constant speed of 60 miles per hour (mph), how many liters of fuel will it consume to travel 300 kilometers? 1 mile = 1.60934 kilometers. 1 gallon = 3.78541 liters.

11 km/L

Elements and Ions

100

Name the ion: SO4^2-

Sulfate

200

Name the diatomic elements

H N O F I CL Br

300

Name the liquid elements at room temperature.

Mercury and Bromine

400

What is the charge of ammonium and nitrate.

1+ and 1-

500

Name the polyatomic ions with their formula

Sulfur (S8) and Phosphorus (P4)

Mixed Operations

100

123.456g−78.23g

45.23g

200

(543.21mL−321.8mL)÷4.50

49.2mL

300

(0.00567mL+2.34mL+0.098mL)×0.145

2.44mL

400

(12.345g+0.1234g+123.4g)×2.34

135.9g

500

((12.34g+4.567g−3.2g)×5.67)/2.1

37g