Answer: 8.2
Explanation:
pH of a solution is - Log [ H+].
pH = - Log [ 6.2 x 10-9 M]
= 9 - 0.7924
pH = 8.24 approx 8.2
Answer:
Keep it simple. If all the oxygen contained in the 200 grams of potassium chlorate is produced in the decomposition, then all we have to do is find out how many grams of oxygen are there in the 200 grams. This we can do by calculating the ratio of oxygen mass to the whole. Using 39.1 for potassium, 35.45 for chlorine and 3 times 16, or 48 for the oxygen, we get a total of 122.55 grams per mole for potassium chlorate, of which 48 grams are oxygen. This ratio is 48/122.55. This ratio times the original 200 grams of the compound, gives us 78.34 grams of oxygen produced.
Explanation:
I think it’s to long to fit in a period??
The energy source from a reservoir would provide affordable, abundant electricity for a factory is a hydroelectric power plant; option D.
<h3>What is energy?</h3>
Energy is the ability to do work.
Energy generating plants may either use wind, water or solar energy to produce electrical energy.
The most abundant source of energy from a reservoir is hydroelectric power plant.
Therefore, the energy source from a reservoir would provide affordable, abundant electricity for a factory is a hydroelectric power plant.
In conclusion, hydroelectric power plants are reservoirs of abundant energy supply.
Learn more about hydroelectric power plants at: brainly.com/question/3406557
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To Find :
The volume of 12.1 moles hydrogen at STP.
Solution :
We know at STP, 1 mole of gas any gas occupy a volume of 22.4 L.
Let, volume of 12.1 moles of hydrogen is x.
So, x = 22.4 × 12.1 L
x = 271.04 L
Therefore, the volume of hydrogen gas at STP is 271.04 L.
