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siniylev [52]
3 years ago
13

What best defines concentration​

Chemistry
2 answers:
zmey [24]3 years ago
7 0
When you focus on something
arsen [322]3 years ago
7 0

Answer:

Explanation:

Answer. In chemistry, concentration refers to the amount of a substance per defined space. Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution. Concentration usually is expressed in terms of mass per unit volume.

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@LightningEmerald1

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4 0
3 years ago
Which best describes how a fetus exchanges gases while in the womb?
vagabundo [1.1K]

Answer:

C. Gas exchange occurs through the placenta.

Explanation:

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5 0
3 years ago
NEED HELP ASAP!!! What is the density of each of the following gases at STP? Show your work.
BaLLatris [955]

Answer:

A. 1.63g/dm^3 (3 s.f.)

B. 0.833g/dm^3 (3 s.f.)

C. 1.92g/dm^3 (3 s.f.)

Explanation:

Please see attached picture for full solution.

3 0
3 years ago
Melting is considered a(n) ___ change because energy is gained by the substance as it changes state
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