Physics, 21.08.2019 17:50 Jasmine3864
When an oxygen atom forms an ion, it gains two electrons. what is the electrical charge of the oxygen ion?
a.-2
b.+2
c.+1
d.-1
Answers: 1
Physics, 22.06.2019 00:00
What type of nuclear decay causes the atomic number of an element to increase by 1?
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Physics, 22.06.2019 13:00
The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.
Answers: 3
Physics, 22.06.2019 13:00
Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.
Answers: 1
Physics, 22.06.2019 17:30
Does heating a metal wire increase or decrease its electrical resistance? why?
Answers: 1
When an oxygen atom forms an ion, it gains two electrons. what is the electrical charge of the oxyge...
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