What are van der waals forces?
a. a permanent dipole that causes hydrogen bonding in nonpolar
molecules
b. they are very strong forces that exist between two different
molecules.
c. they change polar molecules into nonpolar molecules
d. a temporary electron shift causing small dipole attractions
between molecules.

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

How does a hydroelectric power plant converts energy into energy.