1. A 454.8g sample of a mixture containing 70.00% CH4 and 30.00% C2H6 was combusted with oxygen. What is the theoretical yield of carbon dioxide (in grams) for this reaction?

CH4 + 2 O2 > CO2 + 2 H2O

2 C2H6 + 7 02

--> 4CO2 + 6H2O

Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

What is the mass of 8 moles of sodium atoms

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.