Which of the following is not decomposed by heat? by Sunday | Aug 25 | Chemistry WAEC | 0 comments A. CaCO3 B. CuCO3 C. ZnCO3 D. Na2CO3 E. MgCO3 Correct Answer: Option D – Na2CO3 Users Also Read These:The heat of formation of ethene, C2H4 is 50 kJmol−1,…A solid of mass 0.5kg initially at 50oC melts at…The process by which organic matter is decomposed…The statement 'Heat lost by the hot body equals that…A body of mass M, has a specific heat capacity S,…