3 Find the AH° for the reaction below, given the following reactions and subsequent AH values: N2H (1) + CH, O(1) CH2O(g) + N2(g) + 3H2(g) 2NH3(g) N H (1) + H2(g) AH = 47.5 kJ 2NH, (g) N2(g) + 3H2(g) AH=57.5 kJ CH2O(g) + H2(g) CH, O() AH = 81.2kJ ​

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll