Which of the following describes a nonspontaneous reaction (apex)
a. the gibbs free energy is less than the activation energy
b. the gibbs free energy for the reaction is positive
c. the gibbs free energy is more than the activation energy
d. the reaction does not need energy to occur

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

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.

What conclusion can you draw from this experiment about the components of the black ink?