Answer: The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays
the total number of particles is provided in table one as 133 this is the sum of all the isotopes of Mnmium. you will use this value to do table 2 by dividing each isotope by the total number of particles (133).
silicone has an average atomic mass of 28.085 according to the periodic table, this tells us that the Si28 should be the most abundant isotope of the three
to calculate the average atomic mass of silver, we are given the abundance of each isotope and the formula to calculate the average atomic mass is (mass of isotope 1 x abundance percentage) plus (mass of isotope 2 x abundance percentage)...... so the average atomic mass of silver would be ( 107 x 52%) + (109x48%) = 107.96 this value is closer to the atomic mass of silver 107 because it is the most abundant
from the pie chart it is clear to see that Chlorine-35 is the most abundant at 76%
we will determine the average atomic mass of chlorine using the same formula as with silver for the previous question. Chlorine-35 is 76% and Chlorine-37 is 24% therefore (35x 76%)+(37x24%) = 35
Condensation the mirror is cold and the water is warm so it condenses
The total number of valence electrons is 20.(1 from hydrogen, 5 from nitrogen, and 7 from each fluorine so 14 for both) connect all the atoms with a single bond( each bond counts as 2) so far there is 6 electrons so you need to fill in the rest of the 14 and you get the result in the picture.
