A) What mass in grams of H20 is needed to react completely with 40.0 g of Na2O2?

M(H2O) =18.02g/mol
M(NA2O2)= 78g/mol

2Na2O2 (s)+2h2O(I)—> 4NaOH(aq) + O2 (g)

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.

Stage in which a star’s outer layers have started to cool and grow outward?