Natural gas is mostly methane, CHA When 128 grams of methane is burned in the chemical reaction shown below, how many grams of water vapor are produced? CH() +202(g) - CO2(g) + 2H2O(9)
8.00 grams
B
144 grams
C
18.0 grams
288 grams

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

What is the molar mass of a gas that has density of 2.054 g/l

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.