You are examining decomposition of corn leaves following the growing season on a farm. To do this, you place 33 g of corn leaves in a mesh bag and measure decomposition over time. In a literature search, you find that the decay constant of corn leaves is typically 0.04. Given this, use the equation mt =moe−kt to predict the leaf mass remaining in the bag after 30 days.

a. 0.009 g
b. 23.3 g
c. 9.94 g
d. 1.7 g
e. 14.8 g

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

What substance has a mass of 9.5g and volume of 2.1cm^3

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.