In a 108.40 g empty beaker, 2.70 g of sodium reacts with an excess solution of iron ( iii ) acetate . after the reaction, the liquid is poured off and only the iron remains in the beaker and is left out overnight to dry. the next day the iron and the dry beaker have a mass of 110.28g. a calculate the theoretical yield of the iron produced a b calculate the percent yield of iron c if the percent yield is actually 93.1% , how much iron would have formed?

What elements have 2 electrons inthe 4s sublevel

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

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.