Physics, asked by ghh69, 1 year ago

Which of the following reactions involves the combination of two elements?
(A) CaO + CO2 > CaCO3
(B) 4Na + O2 >2Na20
C) S02 +02 >S03
(D) NH3 + HCl» NH4ẠCl

Answers

Answered by ruchi964

1

Answer:

a equation involves combination reaction

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