I would say that oceans help regulate weather, gobal warming, and solar radiation, but also depends on the level of carbon dioxide in the atmosphere level. So basically the oceans absorbs heat radiation from the sun and it retains the heat, which then the atmosphere comes in and also helps retain the heat which then releases the heat after sunset into space, regulating weather around the globe, since most of the globe is also covered by oceans and water.
The answer is (1) 1.3 M. The first thing you need to do is to convert the unit of gram to mole. The mol number of LiF is 52/26=2 mol. Then using the volume to calculate the molarity: molarity=2/1.5=1.3 M.
You have to move higher; potential energy depends on height and mass.
