PLEASE HELP A 3.81-gram sample of NaHCO3 was completely decomposed in an experiment.
2NaHCO3 - Na2CO3 + H2CO3
In this experiment, carbon dioxide and water vapors combine to form H2CO3. After
decomposition, the Nazco, had a mass of 2.86 grams.
A. Determine the mass of the H2CO3 produced.
B. Cáiculate the percentage yield of H, Co, for the reaction. Show your work or describe the
calculation process in detail.

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced. be sure your answer has the correct number of significant digits.