Use the chemical reaction to answer the question capital c a capital c03 Arrow Capital C Capital O2 plus capital c a o the scientist heat 30 G of calcium carbohydrate( in the chemical reaction shown what is the total mass of the products

What a mess? Difficult to comprehend. By the way CaCO3 is calcium carbonate.

CaCO3 ==> CaO + CO2
If the amount of CaCO3 was 30 grams initially then the products (mass CaO + mass CO2 gas) must be 30 grams also. Remember that matter is neither created nor destroyed.