Which of the following is a primary source?

Chemistry

2 answers:

bulgar [2K]3 years ago

6 0

Answer:

I think its C a scientific journal article

Explanation:

Any kind of journal is considered a primary source because journals contain info that the original author wrote. Encyclopedias are considered teritary sources, but im not sure if that counts ...so id go with journals.

7nadin3 [17]3 years ago

4 0

A scientific journal artical

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HELP PLEASE!!!!The graph below compares the volume occupied by 100 g of liquid water and 100 g of water vapor.

soldier1979 [14.2K]

Particles are farther apart in gases so substance X is water vapor

Explanation:

The best statement that fits the two described substances is that particles are farther apart in gases so substance X is water vapor. For a give mass of substance, gases occupies more volume.

Gases do not have specific volumes, occupy space randomly and fills whichever container they are found in.

Liquids on the other hand like solids have specific volume because their particles are very close together.

Particles of gases are random and their molecules are far apart.

Learn more:

states of matter brainly.com/question/10954198

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3 0

3 years ago

A chemist must dilute of aqueous aluminum chloride solution until the concentration falls to . He'll do this by adding distilled

marshall27 [118]

Answer:

0.257 L

Explanation:

The values missing in the question has been assumed with common sense so that the concept could be applied

Initial volume of the AICI3 solution $=23.1 \mathrm{mL}$

Initial Molarity of the solution $=833 \mathrm{mM}$

Final molarity of the solution $=75.0 \mathrm{mM}$

Final volume of the solution $=?$

From Law of Dilution, $M_{f} V_{f}=M_{i} V_{i}$

$\Rightarrow V_{f}=\frac{M_{i} V_{i}}{M_{f}}=\frac{833 \mathrm{mM} \times 23.1 \mathrm{mL}}{75.0 \mathrm{mM}}=256.564 \mathrm{mL}=0.256564 \mathrm{L}=0.257 L$