PLEAS HEL!!! will mark brainliestfor right answer NO LINKS (this has been answered on chegg but I don't have a chegg account.)
The Haber Process involves nitrogen gas combining with hydrogen gas to produce ammonia. If 11.0 grams of nitrogen gas combines with 2.0 grams of hydrogen gas, find the following: the molar mass of reactants and products, the limiting reactant, the excess reactant, the amount of ammonia produced, the amount of excess chemical not used in the reaction.

nitrogen gas + hydrogen gas ↔ ammonia gas

N2 + H2 -> NH3

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Compare and contrast the bohr model and the electron cloud models of the atom.

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.