A nature of a substance with pH 7.5

Define and explain Resonance?

Which of the following would most likely cause a building to erode? A. acid rain B. the heat island effect C. heat pollution D. vehicle emissions

Momentum is dictated by a P instead of an M. A football player is running down the field weight 90Kg he is running 11.1 m/s what is this momentum

Which process allows energy to move from the top of the radiative zone to the photosphere? a. conduction b. convection c. friction d. radiation

the combustion of 0.1240 kg of propane in the presence of excess oxygen produces 0.3110kg of carbon dioxide what is the limittinf reacrant?

Calculate the percent yield when 500 grams of carbon dioxide react with an excess of water to produce 640 grams of carbonic acid. CO2 + H2O - --> H2CO3

Which of the following is a possible equivalence that can be used in a conversion? A. ten to the negative second power hL over one L B. ten to the negative second power cL over one L C. ten to the first power L over one daL D.

Which process is a chemical change? burning a match boiling water melting ice breaking glass

What form of matter is "vapor"? a. a solid made of a substance that is usually liquid c. a gas made of a substance that is usually solid b. a liquid made of a substance that is usually gas d. a gas made of a substance that is usually liquid

Which of the following atoms releases more energy than oxygen when an electron is added to its valence energy level? Select one: a. helium (He) b. fluorine (F) c. carbon (C) d. nitrogen (N)