Chemistry, 08.03.2021 23:10, niescarlosj
An element, X, contains 14 protons, 15 neutrons, and 14 electrons. Which element is this?
a. Element A: 13 protons, 15 neutrons, 14 electrons
b. Element B: 14 protons, 14 neutrons, 14 electrons
c. Element C: 15 protons, 14 neutrons, 15 electrons
Answers: 2
Chemistry, 22.06.2019 09:30, junkmailemail42
Which element is the least metallic between cadmium, silver, zinc, or iron?
Answers: 1
Chemistry, 22.06.2019 11:00, daniel1480
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.
Answers: 2
An element, X, contains 14 protons, 15 neutrons, and 14 electrons. Which element is this?
a. Eleme...
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