Answer:
Option (3)
Explanation:
Wind energy is directly derived from the wind. In the places where wind blowing is quite frequent, there wind mills are being set up, and the turbines in it rotates due to the prevailing wind. Due to this continuous motion of turbines, it collects the wind energy and it is being transferred into electrical energy.
It is cost-effective and does not produce any kind of pollution and is completely a renewable energy, that it can generated again and again.
It does have certain drawbacks also, because <u>the area may sometime do not experience constant wind, due to which it cannot store energy. So frequent wind blowing areas are the best place to set up windmills</u>.
Thus, the correct answer is option (3)
So basically, the change in color effects the amount of cations in the solution making it a physical change rather than a chemical one, defying the law of conservation of mass! I hope this helped! (The only time the change in color affects the amount of cations is in the Alkaline Earth Metals)
source: college science teacher
Answer:
0.2762M Na+ in the solution
Explanation:
<em>2.07g of sodium iodide Is Dissolved In 50.ML Of A 0.30M...</em>
To solve this question we need to find the moles of sodium iodide, NaI, that are the same than the moles of sodium cation, Na+. The volume in liters of the solution is 0.050L. The molarity is:
<em>Moles NaI = Moles Na+ -Molar mass NaI: 149.89g/mol-</em>
2.07g NaI * (1mol / 149.89g) = 0.01381 moles NaI<em> = Moles Na+</em>
Molarity:
0.01381 moles Na+ / 0.0500L =
0.2762M Na+ in the solution
5.76 g of are consumed when is burned to yield 5.3 grams of .
<h3>
What is a mole?</h3>
A mole is defined as 6.02214076 × of some chemical unit, be it atoms, molecules, ions, or others.
Calculating moles of
Number of mole of =
= = 0.12 mol
As is clear from the reaction stoichiometry, 9 moles of 6 moles of .
Calculating the number of moles of
= 0.18 mol
Mass of =5.76 g
Hence, 5.76 g of are consumed when yield 5.3 grams of .
Learn more about mole here:
brainly.com/question/26416088
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The mass number of this particular element is 37
An element with 17 protons will ALWAYS be chlorine.
The mass number is found by adding the element’s protons and neutrons.
protons+neutrons=mass number
Here is the math if needed,
17+20=37
Therefore the mass number is 37
I hope this helped!