you are applying ice to a sprained ankle. calculate the heat, in joules, that is absorbed by 50g of ice at 0 degree C placed on the skin and warmed to body temperature (37 degree C). set up the formula; show your work; and solve for an answer

Avariable that is not being directly tested during an experiment should be

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt