Chem 1 Quiz 1 Post Lab

Question 1
1 out of 1 points

The volume of a regular cylinder is V = πr2h. Using the value 3.1416 for the constant π, the volume (cm3) of a cylinder of radius 2.34 cm and height 19.91 expressed to the correct number of significant figures is _________.

Selected Answer:
d.
342
Correct Answer:
d.
342

Response Feedback:
Correct

Question 2
1 out of 1 points

There are ____________ significant figures in the answer to the following computation:
(29.2 - 20.0 ) (1.79 x 105) 1.39

Selected Answer:
c.
2
Correct Answer:
c.
2

Response Feedback:
Correct

Question 3
1 out of 1 points

The number 0.00430 has _____________ significant figures.

Selected Answer:
a.
3
Correct Answer:
a.
3

Response Feedback:
Correct

Question 4
1 out of 1 points

Of the following, ________________ is the smallest mass.

Selected Answer:
b.
2.5 x 109 fg
Correct Answer:
b.
2.5 x 109 fg

Response Feedback:
Correct

Question 5
1 out of 1 points

A temperature of ______________ K is the same as 63.0 ºF.

Selected Answer:
d.
290
Correct Answer:
d.
290

Response Feedback:
Correct

Question 6
1 out of 1 points

3.337 g/cm3 = ___________ kg/m3

Selected Answer:
a.
3337
Correct Answer:
a.
3337

Response Feedback:
Correct

Question 7
1 out of 1 points

How many significant figures should be retained in the result of the following calculation?
(12.00000 x 0.9893) + (13.00335 x 0.0107)

Selected Answer:
b.
4
Correct Answer:
b.
4

Response Feedback:
Correct

Question 8
1 out of 1 points

The density of silver is 10.5 g/cm3. A piece of silver that occupies a volume of 23.6 cm3 would have a mass of _______________g.

Selected Answer:
c.
248
Correct Answer:
c.
248

Response Feedback:
Correct

Question 9
1 out of 1 points

The density (in g/cm3) of a gold nugget that has a volume of 1.68 cm3 and a mass of 32.4 g is ________________.

Selected Answer:
c.
19.3
Correct Answer:
c.
19.3

Response