For each of the molecule formulas listed below, name each element and tell how many of atom of each element are in that molecule.
a. c6h12o6 b. caco3 c. al2o3 d. b(oh)3

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

What is special about a dc circuit ?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.