Chemistry, 14.06.2021 06:00 Galaxy6267
Water (H20) can decompose in an endothermic reaction to form hydrogen (H2) and oxygen (O2).
2H20(1) - 2H2(g) + O2(g)
Forming the bonds in 1 mole of hydrogen molecules releases 436 kJ of energy. Forming the bonds in 1 mole of oxygen molecules
releases 495 kJ of energy.
When 2 moles of water decompose and form hydrogen and oxygen gases, 475 kJ of energy are absorbed from the surroundings.
How much energy is absorbed when the bonds are broken in 1 mole of water?
OA. 1,842 kJ
B. 921 kJ
C. 703 kJ
OD. 456 kJ
Answers: 1
Chemistry, 21.06.2019 20:30
12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]
Answers: 1
Chemistry, 22.06.2019 09:40
Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?
Answers: 1
Chemistry, 22.06.2019 10:00
What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18
Answers: 1
Chemistry, 22.06.2019 12:00
What is the lowest number energy level where a d sublevel is found
Answers: 1
Water (H20) can decompose in an endothermic reaction to form hydrogen (H2) and oxygen (O2).
2H20(1)...
Mathematics, 14.12.2020 22:20
Mathematics, 14.12.2020 22:20
History, 14.12.2020 22:20
Business, 14.12.2020 22:20
Arts, 14.12.2020 22:20
Mathematics, 14.12.2020 22:20
Mathematics, 14.12.2020 22:20
Mathematics, 14.12.2020 22:20
Mathematics, 14.12.2020 22:20
Mathematics, 14.12.2020 22:20