2NH3 -> N2+ 3H2 - If 2.5 moles of N2 reacts are formed, how many moles of NH3 (ammonia) are decomposed?
- If 6 moles of NH3 (ammonia) are decomposed, how many moles of H2 gas reacts completely?
- If 9 moles of H2 gas is formed, how many moles of N2 are also formed?

How many moles are equivalent to 55.5g of nano3

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

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.