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Chapter 14 Review

Authored by Tiffany Scholle

Chemistry

10th - 11th Grade

Used 2+ times

Chapter 14 Review
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the substances below is the LEAST toxic?

Cola (LD50 = 140mg/kg)
Aspirin (LD50 = 200mg/kg)
Chlorine (LD50 = 850 mg/kg)
Vitamin A (LD50 = 2000 mg/kg)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams of sugar (LD50 = 30 g/kg) would be lethal to a 220 lb woman (2.2 lb = 1 kg)?

6600 g
3000 g
0.30 g
0.13 g

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Jake measures the weight of one bottle cap as 5.03 grams, so he calculates that the weight of 100 bottle caps will be 503 grams.  The actual weight of 100 bottle caps is 495 grams.  What is Jake's percent error?

0.16%
1.6%
4.0%
8.0%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many atoms are there in 1 mole of CO2?

1.81 x 1023 atoms
1.81 x 1024 atoms
6.02 x 1023 atoms
6.02 x 1024 atoms

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The adult LD50 for aspirin is 400 mg/kg.  How many 250-mg aspirin tablets would a 175-pound person need to consume to get a lethal dose? (1 kg = 2.2 lb)

280
241
127
50

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molar mass for ammonium phosphate: (NH4)3PO4

113.0 g/mol
121.0 g/mol
149.0 g/mol
242.0 g/mol

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles of potassium iodide (KI), are there in 50 grams?

166 mol
3.32 mol
2.20 mol
0.30 mol

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