Carbon black is produced by the decomposition of methane: ch4(g) → c(s) + 2h2(g) for equilibrium at 650°c and 1 bar
(a) what is the gas-phase composition if pure methane enters the reactor, and what fraction of the methane decomposes?
(b) repeat part (a) if the feed is an equimolar mixture of methane and nitrogen.

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.