How many calories are released when 100.00 g of steam condenses?

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?