If 2.80 mol of ammonia, NH3, reacts with oxygen according to the unbalanced equation below, how many grams of oxygen are required? *

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

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.