In an aqueous solution, 42% substance dissociates to release hydronium ions. Which of the following statements true for the substance? 1) it is a weak acid
2) it is a weak base.
3) it is a strong acid.
4) it is a strong base.

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