How much work is required to lift up a 6.0 kg backpack to place it on a display shelf? assume the shelf is 2.0 m high.

Helium decays to form lithium. which equation correctly describes this decay?

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?

Which process results in the release of energy stored in the products of photosynthesis? a. polymer synthesis b. depolymerization c. digestion d. cellular respiration