CaCO3+2 HCl→H2O+CO2+CaCl2 The student finds the mass of CO2 generated to be 100g. If the student began with 200g of HCl and there was ample CaCO3 left unreacted, what was the percent yield?

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.