15.0 g of ice cubes at 0.0°c are combined with 150. g of liquid water at 70.0°c in a coffee cup calorimeter. calculate the final temperature reached, assuming no heat loss or gain from the surroundings. (the specific heat capacity of h2o(l), cs = 4.18 j/gc; h2o(s)  h2o(l) h = 6.02 kj/mol)

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.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory