Jonas mixes citric acid with baking soda. How does he know the reaction is endothermic?
1 answer:
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Answer: a) : anode
b. : cathode
c. : anode
Explanation:
Electrochemical cell is a device which converts chemical energy into electrical energy. It consist of two electrodes, anode and cathode.
Oxidation i.e. loss of electrons , which results in an increase in oxidation number occurs over anode.
Reduction i.e. gain of electrons, which results in decrease in oxidation number occurs over cathode.
a. : oxidation : anode
b. : reduction : cathode
c. : oxidation : anode
Emission spectrum results from the movement of an electron from a higher to a lower energy level. The frequency of the photon is 5.5 * 10^14 Hz.
From the formula;
E = hc/λ
h = Plank's constant = Js
c = speed of light=
λ = wavelength = m
E =
E = J
Also;
E =hf
Where;
h = Planks's constant
f = frequency of photon
f = E/h
f =
f = Hz
Learn more: brainly.com/question/18415575