Given the following reaction: 2NO(g) + 2H2 (9) --> N2 (9) + 2H20 (9)
When the reaction occurs and the reactant NO decreases by a molar amount x, how much will the product N2 molar amount increase?
А. х
B. 2x
C. 3x
D. 0.5x

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ