Phosphate baking powder is a mixture of starch, sodium hydrogen carbonate, and calcium dihydrogen phosphate. When mixed with water, phosphate baking power releases carbon dioxide gas, causing a dough or batter to bubble and rise. 2 NaHCO3(aq) + Ca(H2PO4)2(aq) →Na2HPO4(aq) + CaHPO4(aq)+2 CO2(g) + 2 H2O(l)

If 2.5 L of CO2 is needed for a cake and each kilogram of baking power contains 168 g of NaHCO3, how much baking powder must be used to generate this amount of CO2? The density of CO2 at baking temperature is about 1.20 g/L.
Answer in units of g.

Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.