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9 December, 04:38

How many elements are in 2CaCO2 and C8H10N4O2

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Answers (1)
  1. 9 December, 04:59
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    2CaCO2 has 3 and C8H10N4O2 has 4.

    Explanation:

    If a element is Ca then you count it as one. if it is CA it is two. The capital letter represents a element so CA is two elements and Ca is one.
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