If we are talking about moles then the answer to that is 0.22
Hey there,
I would conclude that your correct answer would be "physical". When the nitrogen gas get's very cold, this would be considered a physical change. The are properties that have physical properties.
Hope this helps.
~Jurgen
Answer:
9.133×10^-6 m
Explanation:
A photon is the smallest discrete amount or quantum of electromagnetic radiation. It is the basic unit of all light. Photons are always in motion and, in a vacuum, travel at a constant speed to all observers of 3 x 10^8 m/s.
From the question, the following details were supplied;
Energy of the photon (E) = 4.61×10^−19 J
Speed of light (c) = 2.99×10^8 m/s
Plank's constant (h) = 6.626×10^−34 J⋅s
Wavelength of the photon (λ)= ??? The unknown
From
E=hc/λ
λ= hc/E
Substituting values
λ= 6.626×10^−34 × 2.99×10^8/ 4.61×10^−19
λ= 91.33×10^-7 m
λ= 9.133×10^-6 m
Cu since the oxidation number of Cu is changed from 0 to +2. It means it is oxidized as per loss of two electrons.
moles NaOH = 5.20 g * 1 mol / 40.00 g = 0.13 mol
[NaOH] = n/V = 0.13 mol / 0.500L
= 0.26 M
The answer to this question is 0.26 M
