2C2H2 + 5O2 --> 4CO2 + 2H2O 3.5 moles of O2 react in the combustion reaction above to produce 28 grams of H2O. What is the percent yield?

Afamily is one another name for a group on the table of elements.

How much energy is made when a pice of wood burns. how do you know

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.