Question

Which of the following are elements in this equation:

2Ca (s) + O2(g) - 2Cao (s)?

Check all that apply.

A. g
B. Ca
C. O
D. s

Answer 1

B. Ca AND C.O

Step-by-step explanation:

Ca (calcium)

O (oxygen)

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Answer 2

calcium they are basically group 1,2,3 elements