Hi I'm in Chemistry too this year,
I believe D is correct because usually physical changes are things like density, color or quantity.
Number of atoms in 1 mole = 6.023 * 10²³
Number of atoms in 0.46 mole = 0.46 * 6.023 * 10²³
It is = 2.77 * 10²³ atoms (Approx.)
In short, Your Answer would be Option B
Hope this helps!
Mass % of nitrogen = mass of nitrogen*100 / total mass
= 14*100 / (1+ 14 + 32)
= 14*100 / 47
= 29.7 %
The entire woodpecker population would be DESTROYED
Answer:
Following are the response to the given question:
Explanation:
The number of shells
n = 4
Calculating the spectral line:
