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Zanzabum
3 years ago
7

What is physical and chemical change ?

Chemistry
1 answer:
galben [10]3 years ago
4 0

Answer:

Physical change is there is a difference in appearance, smell, etc.

Chemical change is there is change in the composition or the rearrangement of the atoms of one or more substances.

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Plz I need help is the 2nd time I post this
pychu [463]

Answer:

2--->C

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3---->D

4--->A

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1---->F

Explanation:

I think so, sorry if its wrong.

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A welding tank of oxygen gas has a volume of 100. L. The oxygen in the tank is at a pressure of 95 atm and a temperature of 30.
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When the concentration of a substance differs from one area to another, this creates a concentration.
bija089 [108]

The difference in the concentration of a substance between two areas is called the concentration gradient. When a region has a higher particle concentration than another, this is known as a concentration gradient. A concentration gradient will cause particles in passive transport to diffuse down it from higher concentration to lower concentration until they are evenly spaced.

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brainly.com/question/10725862

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4 0
1 year ago
QUICK (lots of points) How many lone pairs are present in Xylene?!
Snezhnost [94]

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