Question 4 Mr Zapata is putting his flyboard design through an improvement phase by using his engineering
and scientific knowledge to increase the weight load that the Flyboard can handle to increase sales
of his invention.
So, he wants to increase the maximum capacity (the most amount of mass that the machine can
carry) of his Flyboard from 100kg to 200 kg. To achieve this goal, what feature of the machine
MUST Zapata improve?
90kg rider
100 kg rider with 50kg of gear = 150 kg
A) The length of time the machine can fly. B) amount of fuel that the machine can hold C)the speed that the machine can fly D)the force that the machine can exert

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.

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.