TIMED PLS HELP ASAP The Alka-Seltzer experiment produced 0.000208 moles of carbon dioxide. What is the mass of NaHCO3 present in the sample?

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.