Juan puts a pencil into a glass of water. The pencil appears broken at the point where it enters the water. What causes the pencil to look broken? A. The water in the glass absorbs incoming light waves so light cannot pass through the water. B. The light waves traveling through the glass are refracted as the waves pass from air to water. C. The water in the glass changes incoming light waves into a different form of energy. D. The light waves traveling through the glass are reflected by the pencil when it is underneath the water.

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

Draw metallic bonding if two copper

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.