Answer:
1132 MeV/atom
Explanation:
Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.
Also, atomic number of I = 5
3
Thus, the number of protons = 53
Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.
Mass number = Number of protons + Number of neutrons
135 = 53 + Number of neutrons
Number of neutrons = 82
Mass of neutron = 1.008665 amu
Mass of proton = 1.007825 amu
Calculated mass = Number of protons*Mass of proton + Number of neutrons*Mass of neutron
Thus,
Calculated mass = (53*1.007825 + 82*1.008665) amu = 136.125255 amu
Mass defect = Δm = |136.125255 - 134.910023| amu = 1.215232 amu
The conversion of amu to MeV is shown below as:-
1 amu = 931.5 MeV
<u>So, Energy = 1.215232*931.5 MeV/atom = 1132 MeV/atom</u>
Answer: sodium metal and chlorine gas
Explanation:
Answer:
Explanation:
We have to start with the reaction:
<u>We have 2 carbons, 6 hydrogens and 38 oxygens on both sides</u>.
Now the <u>molar ratio</u> between and is 2:12 or . With this in mind we can calculate the moles of , so:
I hope it helps!
Answer:
Explanation:
Remark
First of all you have to identify what is happening. You make the following observations.
The solution in the test tube in a cold water bath is colorless.
As you add heat, the color changes from colorless to brown.
What you are told
N2O4 is colorless
NO2 is brownish red.
What you conclude
The reaction is endothermic. That means it requires heat to happen. An endothermic reaction is
A + Heat ===> B
So you have three possible correct answers
N2O4 + 14 kCal ===> 2NO2
N2O4 ====> 2NO2 dH = 14 kCal
N2O4 ====> 2NO2 - 14 kCal
I can't read the last 4 equations.
Other answers
As the temperature increased, the N2O4 became less.
As the temperature increased, the products were favored. (color change)
The reaction is exothermic (gives off heat) when the reaction goes from
NO2 - Heat ===> N2O2