Which of the following statements describes the state of matter known as gas? A. Gas is the state of matter that has a definite shape and volume.
B. Gas is the state of matter that has no definite shape or volume.
C. Gas is the state of matter that has less mass than the liquid from which it forms.
D. Gas is the state of matter that has more mass than the liquid from which it forms.

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