which of the following pairs of molecules can form hydrogen bonds between them? group of answer choices ch3oh and nh3 hcl and hi ch4 and h2o fo2 and ch2o h2 and o2

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