This chemical equation represents a chemical reaction. CaCO3 + 2HCI – CO2 +CaCl2 + H20
Which chemical is a reactant in this reaction?
O A. CO2
B. CaCl2
O C. HCI
O D. H20

In pqr m< p=60 m< q= 30 and m

Give more examples of this type of heat transfer:

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?