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zavuch27 [327]
3 years ago
13

Select all the correct answers.

Chemistry
1 answer:
Butoxors [25]3 years ago
7 0

4 option is the correct statement

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the height of a column of mercury in barometer is 754.3mm. what us the atmospheric pressure in atm. in kPa.
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3 years ago
What is the definition of chemistry
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<h2>Definition:</h2>

Chemistry is the study of matter, it's properties, how and why substances combine or separate to form other substances, and how substances interact with energy. Chemistry is one of the physical sciences that help us to describe our world.

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•chemistry is a little hard.

•chemistry is fun to do!

<h2>synonyms:</h2>

•system

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<h2>antonyms:</h2>

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How many nucleons are there in an atom with a nuclear charge of +20 and 23 neutrons?
dalvyx [7]

Answer:

43

Explanation:

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