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Vanyuwa [196]
3 years ago
8

Does anyone help me about chemical reactions?

Chemistry
1 answer:
san4es73 [151]3 years ago
3 0
SYNTHESIS
element + element => compound

DECOMPOSITION
compound => element + element

SINGLE REPLACEMENT
AX + B => BX + A

DOUBLE REPLACEMENT
AX + BY => AY + BX

Sorry idk which 3/4 correspond to this is just how i learned it :)
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<u>Answer:</u>

<em>20, 44, 62 </em>

<em></em>

<u>Explanation:</u>

To find the number of atoms of each element, we multiply coefficient and subscript  

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If there is a bracket in the chemical formula  

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