A researcher is trying to identify whether household substances are basic. Which approach would BEST help
the researcher investigate whether substances are
basic?
O A. Test each substance with blue litmus paper.
a
B. Test each substance with red litmus paper.
O
C. Mix each substance with a weak base and record the
results.
o
D.. Observe each substance and record its color.

How have the greenhouse gasses increased from the year 2000 to 2018

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.

Light waves travel than sound waves.