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rodikova [14]
3 years ago
10

Which of the following is/are true?

Chemistry
1 answer:
tatiyna3 years ago
8 0

C

Tarnishing of silver is caused by hydrogen sulfide and other sulfur containing compounds in the air reacting to the silver and resulting in a fine layer of silver sulfide. The other answers don't make sense

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Which chemical formula represents both an element and a molecule?
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Explanation:

element - a basic substance that can't be simplified (hydrogen, oxygen, gold, etc...) molecule - two or more atoms that are chemically joined together (H2, O2, H2O, C6H12O6, etc...) compound - a substance that contains more than one element (H2O, C6H12O6, etc...)

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A hypothetical main group element E reacts with chlorine to form an ionic compound with the formula ECl. The element is a member
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I NEED HELP ASAP IF YOU GET IT CORRECT I WILL MARK YOU AS BRAINLIEST
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