1 answer:
Answer:
The correct answer is a the central core and is composed of protons and neutrons.
Explanation:
Nucleus is present in the center of an atom.Nucleus contain positively charged particle proton along with neutron which is neutral.
Due to the the presence of protons nucleus contain positive(+ve) charge.
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The sun
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Answer:
I think its B
Explanation:
Precipitation reactions leave a solid behind. The solid is called a precipitate.
Answer:
a measure of how acidic/base water is.
Explanation:
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