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2 years ago

One of the signs a chemical reaction is taking place

1 answer:

6 0

Answer: One of the signs a chemical reaction is taking place is the presence of bubbles. :)

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Drupady [299]

Answer:

Explanation:

Given

Volume of paint is $V=3.79\times 10^{-3}\ m^3$

Area of cover $A=25\ m^2$

Suppose paint to be a rectangular box with thickness t and volume V

therefore we can write as

$V=A\times t$

$t=\frac{V}{A}$

$t=\frac{3.79\times 10^{-3}}{25}$

$t=1.516\times 10^{-3}\ m$

$t=1.516\ mm$

6 0

2 years ago

ale4655 [162]

Answer: D

If the fog disappears when the Sun comes out, then this is an example of condensation because:

the Sun actually dries up the fog, and it makes it into higher clouds.

Hope this helps you!

3 0

2 years ago

Helga [31]

The answer is A.

6 0

3 years ago

Katena32 [7]

can't read it, need larger picture

5 0

3 years ago

-BARSIC- [3]

Convection is the answer i
think

6 0

2 years ago