What volume of 0.500 M aqueous HCI must be added to 5.60 g of solid calcium oxide, CaO, to react with all of the CaO? The reaction is as follows:
CaO(s) + 2HCl(aq) --> CaCl2(aq) + H2O(1)
(00.100 L
D0.200 L
0.300 L
boy
0.400 L
0.500 L

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

Which of the following is not true about the atomic model of substances?

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?