Exam 1 Review

Dimensional Analysis

100

Convert 9.3 grams of substance to Nanograms

9.3 x 10⁹ng 

200

Convert 14.3 mg to kilograms

1.43 x 10^-5 kg

300

Convert 5.2 micrometers to picometers

5.2 x 10⁶pm

400

Convert 8.32 nanometers to centimeters

8.32 x 10^-7cm

500

Convert 7.56ng to teragrams

7.56 x 10^-18tg

Sig Figs

100

How many significant figures does 500.0 mol have?

4

200

How many significant figures does 0.001 mol have?

1

300

How many significant figures does 6120345.11 mol have?

9

400

How many sig figs does 1.5689 x 10⁴mg have?

5

500

How many significant figures does 5.00243 mol have?

6

Miscellaneous

100

A wood block has 3 cm on each side and has a mass of 25 g. Calculate the density of the block.

0.93 g/cm³

200

What is the atomic mass of “Cs”?

132.91 g/mol

300

A wood block has a volume of 52 cm³ and has a density of 67.2 g/cm³. Calculate its mass.

3494.4 g

400

What is “H”, a cation or anion?

Neutral

500

What is the correct formula for butane?

C₄H₁₀

Naming

100

What is the correct formula for nitrogen dioxide?

NO₂

200

What is the correct formula for silver sulfide?

Ag₂S

300

What is the correct name for CO₃^2-

Carbonate

400

What is the correct name for H2SO4?

Sulfuric Acid

500

What is the correct name for H2SO3?

Sulfurous Acid

Moles

100

4.00 moles of sodium have a mass of?

92.0 g.

200

How many atoms of sulfer are in 2.7 moles?

1.6E24

300

3.00 moles of NO2 have a mass of what in kg?

0.138kg

400

Determine the number of moles of aluminum in 96.7 g of Al.

3.58 mol

500

Calculate the moles present in 10.5 g CaCO3.

0.105 mol