(e) The same experiment was repeated using 0.0500 mol/dm3 dilute hydrochloric acid [2]
to neutralize magnesium hydroxide in the antacid tablet.
The following hypothesis was made by a student:
"Both sulfuric acid and hydrochloric acid are strong acids, thus, 19.10 cm of HCI
will be needed to neutralize 25.0 cm3 of the dissolved solution."
Discuss the above hypothesis.

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.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?