4. Methane, CH4, is one carbon atom bonded to four hydrogen atoms. In order to show how carbon and hydrogen bond, the electron dot configurations must beknown for each
element. Which statement describes the electron dot configuration for carbon when it
bonds with four hydrogen atoms?
a. The carbon symbol C with two dots on the left and right sides
b. The carbon symbol C with two dots on the top and two dots on the bottom
c. The carbon symbol C with one dot on each the top, bottom, left, and right sides
d. The carbon symbol C with two dots on the top, two dots on the bottom, and one
dot on each side.

This is a mixture that has the same composition throughout.

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

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.