Module 17 ECI items .pdf

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Module 17 ECI items
Date:

Name:
1.

The concentration of a solution can be expressed
in

3.

A 2400-gram sample of an aqueous solution
contains 0.012 gram of NH3 . What is the
concentration of NH3 in the solution, expressed as
parts per million?

A.

milliliters per minute

B.

parts per million

A.

5.0 ppm

B.

C.

grams per kelvin

C.

20 ppm

D. 50 ppm

15 ppm

D. joules per gram

2.

4.

Which type of concentration is calculated when
the grams of solute is divided by the grams of the
solution, and the result is multiplied by 1,000,000?
A.

molarity

B.

parts per million

C.

percent by mass

D. percent by volume

page 1

A 20.-milliliter sample of 0.60 M HCl is diluted
with water to a volume of 40. milliliters. What is
the new concentration of the solution?
A.

0.15 M

B.

0.60 M

C.

0.30 M

D. 1.2 M

Problem-Attic format version 4.4.291
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Module 17 ECI items
1.
Answer:

B

2.
Answer:

B

3.
Answer:

A

4.
Answer:

C

03/20/2017


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