CaCO2=CaO + CO₂
How do I balance this equation?

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

What is the number of moles in 15.0 g ash3?

Heat is the total potential energy of a substance that can be transferred. true false