During a laboratory experiment 3.81g of NaHCO3 was thermally decomposed to generate 2.86 grams of carbonic acid (H2CO3). Calculate the percent yield of carbonic acid for the reaction. Show all work for the calculation (10 points). NaHCO3 → Na2CO3 + H2CO3

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

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.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal