Is cutting a sheet of paper in half a physical or chemical change

What would happen to a plant that could not obtain carbon dioxide? A. it would not be able to reproduce B. it would not be able to eliminate waste products C. it would not be able to absorb minerals D. it would not be able to make food

Calculate the molarity of a solution prepared by dissolving 195 g of sodium chloride (NaCl) in enough water to make 2.8 liters of solution.

If you filled a flat car tire with lots of dry ice and screwed the cap tightly on the valve stem what will happen over time? a. The tire will begin to inflate. b. The tire will get really cold but the dry ice would stay as a solid. c.

Which shows the correct relationship? small K = positive ∆G = positive E0cell small K = positive ∆G = negative E0cell large K = negative ∆G = positive E0cell large K = positive ∆G = positive E0cell large K = negative ∆G = negative E0cell

What is the definition of convection a. the process in which energy is released by molecules breaking apart b. the process in which energy is released by molecules breaking apart c. transfer of heat between two objects that are touching d.

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.