ECI Problems molesmoleculesatomsgrams .pdf

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untitled
Name:
1.

The mass in grams of 1.00 mole of CaSO4 2H2 O
is
A.

2.

Date:

172 g

B.

154 g

C.

136 g

3.

D. 118 g

What is the total number of moles contained in
115 grams of C2 H5 OH?
A.

1.00

B.

1.50

C.

3.00

4.

D. 2.50

page 1

The total number of sodium atoms in 46.0 grams
of sodium is
A.

3:01

1023

B.

6:02

1023

C.

12:0

1023

D. 24:0

1023

Which sample of O2 contains a total of 3:01 1023
molecules at STP?
A.

1.00 moles

B.

2.00 moles

C.

16.0 grams

D. 32.0 grams

Problem-Attic format version 4.4.279
c 2011–2016 EducAide Software
_
Licensed for use by Seth Johnson
Terms of Use at www.problem-attic.com
untitled
1.
Answer:

A

2.
Answer:

D

3.
Answer:

C

4.
Answer:

C

01/15/2017


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