How much energy (cal) is needed to vaporize 5.00 g of water to steam at 100.C? (The specific heat of water is 1.00 cal/g, the heat of fusion is 79.7 cal/g, and the heat of vaporization is 540 cal/g)..

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Nan element’s square on the periodic table, the number with the greatest numerical value represents the

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?