If you have a magnesium for every oxygen, then you have to start with two magnesiums. So the balanced equation is 2 Mg + O2 2 MgO.
And
CaCO3———→CaO + CO2
I hope it helped!
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The formula or chemical formula of a compound is same irrespective of source / mode of synthesis . Thus if a sample of compound has one carbon atom for every two atoms of oxygen (CO2), the formula will remains the same
So the answer is that for all other samples the compound X should hold this ration true.
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
Answer:
6 is the right answer I know cause I like science