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dalvyx [7]
3 years ago
11

What is chalk made of?

Chemistry
2 answers:
aksik [14]3 years ago
7 0
I think it is calcium carbonate, from sedimentary rocks and such
skelet666 [1.2K]3 years ago
6 0
Calcium carbonate
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Classify matter according to its composition give examples??<br><br><br> plzz answer quickk!!!!!!
solong [7]

Answer:

Explanation:

Matter can be classified into two broad categories: pure substances and mixtures. ... A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound. For example, water is a compound composed of the elements hydrogen and oxygen.

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The stability of an isotope is based on its
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Option 4. ratio of electrons to protons

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dmitriy555 [2]

Answer:

the kinetic energy of the reactant molecules(C)

Explanation: i hope this is the correct answer if this is wrong or incorrect please let me know

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Explanation:

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