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2 years ago

What happens to the total mass of a substance undergoing a physical change

2 answers:

7 0

That depends. What kind of change are you talking about? But

Mass through chemical change stays the same as well. Example: burning paper, the ash left behind is not all of the mass of the reactants, Carbon dioxide, and other substances also makeupmass but just is not seen

Lady_Fox [76]2 years ago

6 0

If your answer choices are:

It stays the same.

It doubles.

It triples.

It is reduced.

The correct answer is "It stays the same."

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Simplify - Factor a

Dmitriy789 [7]

Answer:

Option 1

Explanation:

Option number 1 is the most compact one which indicates it is a solid

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2 years ago

A tank of oxygen with a pressure of 23 atm is moved from room temperature of 293K to a storage freezer at 239K. What is the fina

Gelneren [198K]

Answer:

18.76atm

Explanation:

Using the formula V1P1/T1 = V2P2/T2, from combined gas law. Volume is constant since we have not been given. Therefore the formula comes to be; P1/T1 = P2/T1

To get P2 = T2(P1/T1)

Where P2 is final pressure

P2 = 239K ( 23atm/293K)

=18.76atm

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3 years ago

4. milk turning sour

sp2606 [1]

I think it’s a physical

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2 years ago

Read 2 more answers

How does acid affect limestone?

Andrej [43]

Answer:

It reacts by fizzing and wearing away/dissolving the rock.

Explanation:

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3 years ago

Explain why the following are made of thermosetting plastics.

rusak2 [61]

Answer:

a: they're used in saucepan handles 'cause they don't soften when heated and also 'cause they cant be bent easily.

b: thermosetting plastics are bad electricity conductors. they don't get moulded and are also hard and strong.

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2 years ago