3 years ago

Please Answer, thank you so much!

Chemistry

1 answer:

alexandr402 [8]3 years ago

3 0

I think it is the first one

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gladu [14]

Answer:

A chemical reaction.

Explanation:

A change in temperature is evidence of a chemical reaction.

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3 years ago

A eraser has a mass of 4g and a volume of 2cm3 what is it’s density

sladkih [1.3K]

Answer:

<h3>The answer is 2.0 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

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volume = 2 cm³

We have

$density = \frac{4}{2} \\$

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Propane burns in air to produce carbon dioxide and water?

Elan Coil [88]

Hey there!
Great question=)

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I hope this helps;)

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