CHEM 1314 Exam 1

Vocab

100

What is the simplest form of matter?

Element

200

What is two or more elements combined?

Compound

300

What is a bond between a metal and nonmetal?

Ionic Bond

400

What is a uniform mixture?

Homogenous mixture

500

What is the energy of motion?

Kinetic energy

Formula to Names

100

What is the name of Sr₃N₂ ?

Strontium nitride

200

What is the name for LiCl? 

Lithium Chloride

300

What is the name for FeF₂?

iron (II) fluoride

400

What is the name of H₂SO₃?

Sulfurous Acid

500

What is the name for Al₂(Cr₂O₇)₃ ?

aluminum dichromate

Names to formula

100

What is the chemical formula for hydrochloric acid?

HCl

200

What is the formula for copper (II) chlorate?

Cu(ClO₃)₂

300

What is the chemical formula for barium hydrogen carbonate?

Ba(HCO₃)₂

400

What is the formula for tin (II) hydrogen carbonate?

Sn(HCO₃)₂

500

What is the formula for manganese (III) sulfide?

Mn₂S₃

Dimensional Analysis

100

A barrel of oil is exactly 42 gal. How many liters of oil are in the barrel? 1 gal= 3785 mL

158.97

200

Is a 197-lb weight-lifter light enough to compete in a class limited to those weighing 90 kg or less? 1 lbs= 453.592 g

Yes (89.4)

300

How many milliliters are in a 12 oz soda can?

1 oz= 0.0296 L

355.2 (3.6*10^-2)

400

The label on a box of cereal gives the mass of cereal as 34.5 oz. Transfer this into SI Units, knowing that 28.35 g= 1 oz

.978 kg

500

If Stillwater is 1,417 miles from New York City, how many kilometers away is New York City? 0.62 miles= 1 km

2285 km

Atomic Mass

100

Lithium has two naturally occurring isotopes: lithium-6 and lithium-7. If the average atomic mass of lithium is 6.941 amu, which isotope is the most abundant?

Lithium-7

200

Average atomic masses listed by IUPAC are based on a study of experimental results. Bromine has two isotopes, 79Br and 81Br, whose masses (78.9183 and 80.9163 amu) and abundances (50.69% and 49.31%) were determined in earlier experiments. Calculate the average atomic mass of Br based on these experiments.

79.90

300

An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99 amu, 0.26% abundance with 20.99 amu, and 8.82% abundance with 21.99 amu. Calculate the average atomic mass of this element.

20.16 amu

400

Calculate the average atomic mass of lithium, which occurs as two isotopes that have the following atomic masses and abundances in nature: 6.017 u, 7.30% and 7.018 u, 92.70%

6.945

500

Hydrogen is 99% 1H, 0.8% 2H, and 0.2% 3H. Calculate its average atomic mass

1.012