Given the reaction at equilibrium:
n2(g) + 3h2(g) --> 2nh3(g) + 91.8 kj
what occurs when the concentration of h2(g) is increased?
(1) the rate of the forward reaction increases and the concentration of n2(g) decreases.
(2) the rate of the forward reaction decreases and the concentration of n2(g) increases.
(3) the rate of the forward reaction and the concentration of n2(g) both increase.
(4) the rate of the forward reaction and the concentration of n2(g) both decrease.

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.