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VSEPR

100

What are the two questions you ask when figuring out the molecular geometry of a compound?

How many electron regions are there?

How many lone pairs are there?

200

What is the molecular geometry (VSEPR) of CO₂ with respect to C?

Linear

300

Draw NH₃. What is the molecular geometry with respect to N?

Trigonal Pyramidal

400

Draw COH₂. What is the molecular geometry with respect to C?

Trigonal planar

500

Draw an example of a tetrahedral compound.

CCl₄, CBr₄, etc.

Naming

100

Name the following compound: N₂O₄.

Dinitrogen Tetroxide

200

Name the following compound: CO₂.

Carbon dioxide

300

Write the formula for disulfur decafluoride.

S₂F₁₀

400

Write the formula for chlorine trifluoride.

ClF₃

500

Write the name for CaO.

Can't name, not covalent.

Percent Composition

100

Write the formula for percent composition.

(Part/whole)*100 =

200

Calculate the percent composition for CrF_3.

Cr = 48%

F = 52%

300

Calculate the percent composition for KCN.

K = 60%

C = 18%

N = 22%

400

Calculate the percent composition for Na₃PO₄.

Na = 42%

P = 19%

O = 39%

500

Calculate the percent composition for Mg(NO₃)_2.

Mg = 16%

N = 19%

O = 65%

Scientific Notation

100

100

1 x 10²

200

3456

3.456 x 10³

300

123456.00

1.2345600 x 10⁵

400

Round 0.00009876 to 3 sigfigs AND write in scientific notation.

9.88 x 10^-5

500

Round 567893 to 1 sigfig AND write in scientific notation.

6 x 10⁵

Conversion

100

What is one mole?

6.02 x 10²³

200

Molar mass equals how many moles?

1

300

Convert 4.5 moles NaCl to molecules.

2.7 x 10²⁴ molecules NaCl

400

What is the mass of 10 molecules of CO₂?

7 x 10^-22

500

Convert 2 mg of Ca to molecules (1000 mg = 1 g).

3 x 10¹⁹