I think it is calcium carbonate, from sedimentary rocks and such
It's genre. Look for something either on a final or starting page near the cover, and check to look if it's non fiction, or anything else that could prove it as reliable.
Answer:
Exothermic Reactions.
Explanation:
Reactions that release energy are called exothermic reactions.
Whereas that absorb energy are called Endothermic reactions.
More energy is being released to the surroundings than was absorbed to initiate and maintain the reaction in case of exothermic reactions.
Burning of a candle is an exothermic reaction.
Answer:
CaCO3----------CaO+CO2
(40g+12g+16g×3) of CaCO3 produce (40g+16g) of CaO
100g of CaCO3 -----------------56g of CaO
20g of CaCO3-------------------x grams of CaO
x=(20g×56g)÷100g
x=1120gg÷100g
x=11.2g of CaO
Therefore, 11.2grams of CaO from 20grams of CaCO3
HOPE IT HELPED, PLEASE MARK BRAINLIEST
Answer molecule
Explanation: The combination of two or more atoms, from the same or different elements, creates a molecule. Compounds are a type of molecules made of atoms from different elements held together by chemical bonds.