Answer:- The speed of the satellite is 7.6 .
Solution:- It's a unit conversion problem that could be solved using dimensional analysis which is also known as train trail method.
The given speed of the satellite is 17000 miles per hour and we are asked to convert it to kilometers per second.
given:
1 Kilometer = 0.62 mile
1 hour = 3600 second
Let's use this given info and plug in the values to make the set up as:
= 7.616
We round the answer to two significant figures, since the given number(17000) has only two significant figures.
Hence, the speed of the satellite is 7.6 .
According to the research, the correct option is Atoms can join together to form a new substance. It is the statement that correctly describes atoms.
<h3>What are atoms?</h3>
It refers to the smallest amount of a chemical element that has its own existence and is considered indivisible.
Atoms have the properties of the chemical element they compose and, in turn, can combine with each other to form chemical bonds, and to constitute different chemical compounds and substances that make up the organs and organ systems in living beings, the materials generated in industry, and all the matter that makes up the universe.
Therefore, we can conclude that according to the research, the correct option is Atoms can join together to form a new substance. It is the statement that correctly describes atoms.
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The molar Concentration of KMnO₄ is 0.000219 M
Concentration is the abundance of a constituent divided by means of the overall extent of an aggregate. numerous styles of mathematical description may be outstanding: mass awareness, molar awareness, variety concentration, and quantity awareness.
y is absorbance
x is the molar concentration of KMnO_4
y = 4.84E + 03x - 2.26E - 01
0.833 = 4.84 * 10⁺⁰³ x - 2.26 * 10⁻¹
1.059 = 4.84 * 10⁺⁰³ x
X = 0.000219 M
Hence, The molar Concentration of KMnO₄ is 0.000219 M
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multiply by (6.02 times 10^23 atoms)/(1mole, cancel out atoms)