One of the Environmental science teacher is a member of a movement whose objective is "making the building green". Which of the following is the teacher likely to be advocating?

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

Calculate the concentration of all species in a 0.165 m solution of h2co3.

How many atoms or molecules are there in a mole of a substance?