10.4%
First, calculate the total mass by adding the masses together.
26.0 g + 225 g = 251 g
Now calculate the percentage of 251 that 26 is using division:
26 / 251 = 0.103585657 = 10.3585657%
So the mass percent of KCl is 10.4% (after rounding to 3 significant digits)
Solving part-1 only
#1
KMnO_4
- Transition metal is Manganese (Mn)
#2
Actually it's the oxidation number of Mn
Let's find how?
- x is the oxidation number
#3
- Purple as per the color of potassium permanganate
#4
Answer:
False
=><em><u>Energy</u></em><em><u> </u></em><em><u>Neither</u></em><em><u> can</u></em><em><u> be</u></em><em><u> </u></em><em><u>created</u></em><em><u> </u></em><em><u>nor</u></em><em><u> </u></em><em><u>destroyed</u></em><em><u> </u></em><em><u>not </u></em><em><u>matter.</u></em>
The answer is TRUE.
Energy is an extensive property, which means that it is in proportion to the amount of matter: more mass, more energy.
You can measure, for example, the internal energy per mol or per gram of several compounds or elements. then if you want to know the total internal energy of the system you have to multiply by the number of moles or grams, depending on the unit of the internal energy that you use.
Answer:
C) The most efficient fusion reactors would use heavier forms of hydrogen.
Explanation:
From the information presented to us in the question, the third sentence reveals that heavier forms of hydrogen produces larger amount of energy and most importantly reacts more efficiently when fusion occurs.
<em>In fact, the </em><u><em>heavy isotopes of hydrogen—deuterium and tritium—react more efficiently</em></u><em> with each other, and, when they do undergo fusion, they yield more energy per reaction than do two hydrogen nuclei. </em>