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iogann1982 [59]
3 years ago
11

Which statement about a chemical reaction is true?

Chemistry
1 answer:
Afina-wow [57]3 years ago
7 0

yes yes yes yes yes yes yes yes yes yes yes yes yes yes

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In the Formula 3H2O what is the 3 called
vekshin1

Its very simple .

3H2O ---- three H two O

Its  3 molecules of water

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What is the S.I unit of pressure?
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Answer:

pascal(pa)

Explanation:

the unit of pascal (pa), defined as a force of one newton per square meter. the conversion between atm ,pa, torr is as follow : 1 atm =101325 pa= 760 torr.

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Dew forming on grass is an example of condensation true or fales and explain
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True becuase dew is coming out of the air which if you look at a glass of water it has condensation on it becuase it is hot
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4 years ago
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John rings a doorbell.
Kamila [148]

Answer:

<u>Yes</u>

Explanation:

Remember, <u>Newton's third law of motion;</u> which says in part that <em>"Every action has an equal and opposite reaction."</em>

Hence, in this case, the fact that the doorbell rang out implies that there was another force that was exerted on it; which is, John's finger pressing the doorbell.

In other words, when John uses his fingers to press the doorbell button he applies a force (a mechanical force), and that force results in an opposite reaction; the ringing of the doorbell.

6 0
3 years ago
A property is a characteristic of a substance that can be observed and does not change the identity of the substance. T/F
Murljashka [212]
The correct answer is false. The statement given does not describe a property in general. However, it speaks of a specific type of property which is the physical property.  This property is the one that does not change the identity of a substance. A property can also be a chemical property where the identity of a substance is changed.
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