Chemical Reactions
Stoichiometry
Solubility
Environmental Chemistry
Acids/Bases
100

What does the symbol, "aq" stand for?

aqueous

100

6.02 x 1023 atoms are equal to how many moles?

1 mole

100

Soluble or Insoluble: NaNO3

Soluble (aq)

100

Is CO2 a greenhouse gas?

yes
100

Something with a pH of 4 would be: acidic / basic / neutral?

acidic

200

Water boiling from a pot on a stove is an example of what kind of change?

Physical change

200

How many atoms are in 2 moles?

1.20 x 1024 atoms

200

What is a "group 1" element

An element in the far left of the periodic table.

200

Heat energy is a common name for what type of energy? (hint: snakes use this to sense prey!)

infrared radiation (energy)

200

What is the pH of a solution where [H+] = 1.0 x 10-4 M?

4

300

When balancing equations, it's best to save which two elements for last?

H and O

300
You measure out 15.4 g of NaCl. How many moles is this?

0.264 mol NaCl

300

Is Ag2CO3 soluble or insoluble?

insoluble (s)

300

Why is the global temperature on Earth rising?

Global warming due to greenhouse gas emissions.

300

What is the [H+] of a solution with a pH of 7?

1.0 x 10-7 M

400

What coefficients would balance the following equation:

__Na + __Cl--> __NaCl

2, 1, 2

400

How many moles are required to completely react with 1.45 mol of chlorine, based on the following equation:

2 Na + Cl2 --> 2 NaCl

2.90 mol Na

400

Is MgO soluble or insoluble?

Soluble (aq)

400

Given the same amounts of each, which is the most harmful greenhouse gas? CO2, CH4, or N2O?

N2O

400

What is the pH of a 0.00032 M solution of HCl?

3.49

500

What coefficients would balance the following equation:

__Al + __S8 --> __Al2S3

16, 3, 8

500

How many grams of magnesium would be required to produce 5.50 g of magnesium oxide (MgO)

2 Mg + O2 --> 2 MgO

3.32 g Mg

500

What are the products of the double replacement reaction of these two reactants (including phase of matter)?

NaOH + AlF3 --> ___( ) + ___( )

NaF (aq) + Al(OH)3 (s)

500

Describe the greenhouse effect

Greenhouse gas molecules trap heat in earth's atmosphere.

500

What is the pH of a 0.00032 M solution of LiOH?

10.51

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