Why do we put salt on the floor in the winter?

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?