Chemistry, 12.12.2019 08:31 kayla232734
When oxygen reacts with hydrogen, it has the capacity to release 29 kilojoules of energy. inside a fuel cell, oxygen reacts with hydrogen to produce 23 kilojoules of useful energy. the rest of the energy is lost as heat. what’s the efficiency percentage of the fuel cell?
Answers: 2
Chemistry, 21.06.2019 14:00
Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.
Answers: 1
Chemistry, 22.06.2019 13:10
Which electron configuration represents the electrons in an atom of sodium in the ground state at stp
Answers: 1
Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
When oxygen reacts with hydrogen, it has the capacity to release 29 kilojoules of energy. inside a f...
Mathematics, 23.08.2019 12:50
Social Studies, 23.08.2019 12:50
Social Studies, 23.08.2019 12:50
Mathematics, 23.08.2019 12:50
Health, 23.08.2019 12:50
History, 23.08.2019 12:50
Mathematics, 23.08.2019 12:50
Mathematics, 23.08.2019 12:50
English, 23.08.2019 12:50
History, 23.08.2019 12:50
Physics, 23.08.2019 12:50