<span>For isotopes of any element, the number of protons remains the same, BUT the number of neutrons changes. Since each of the isotopes listed is phosphorus, All three have 15 protons. (They have 16, 17 and 18 protons respectively.)</span>
Answer:
D — All of them
Explanation:
The activation energy in a reaction is the minimum amount of energy required for a chemical reaction to take place. Since all the options are processes in a chemical reaction, D should be the answer.
Answer: The ![[OH^-]](https://tex.z-dn.net/?f=%5BOH%5E-%5D)
of a solution is 
M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
where,
n = moles of solute
= volume of solution in ml
moles of 
= 
Now put all the given values in the formula of molality, we get
pH or pOH is the measure of acidity or alkalinity of a solution.
According to stoichiometry,
1 mole of gives 1 mole of 
Thus 
moles of gives =
moles of
Putting in the values:
![[H^+][OH^-]=10^{-14}](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%5BOH%5E-%5D%3D10%5E%7B-14%7D)
![[0.01][OH^-]=10^{-14}](https://tex.z-dn.net/?f=%5B0.01%5D%5BOH%5E-%5D%3D10%5E%7B-14%7D)
![[OH^-]=10^{-12}](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D10%5E%7B-12%7D)
Thus the of a solution prepared by dissolving 0.0912 g of hydrogen chloride in sufficient pure water to prepare 250.0 ml of solution is M
It could not hold good for elements heaver than calcium.
Answer:
Hydropower has a faster rate because water is continuously being recycled through the hydrogeological cycle.
Explanation:
The source of hydropower is mostly from water which is a part of the hydrogeological cycle. Water is renewed at a faster rate within the weather system from time to time. We can easily forecast and predict an areas potency of generating hydro-electricity. Water is a renewable resources.
For nuclear power, the source is geological. Not all elements are radioactive. A certain condition must be fulfilled for spontaneous radioactivity in an isotope. Minerals are mined for their useful radioactive materials which serves as fuels in nuclear power plant. Geological processes takes a very long time to occur and so the sources of nuclear power is not easily renewed. In fact, they are classified as part of non-renewable resources.
