use the half-reactions of the reaction (OH)2 + H + 12 to answer the questions Reduction haf-eator 3.38 A Orication tafection=l+22 How many electors des each gold son gain? Horary elerons des seca odire an lese What is the mai murder of elecrors re are moved in the oxidation-reduction reaction? Complete reira talanced equation besed on the far-reactions​

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground,its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy