scandium is a transition metal and shows a valency of 3.
Answer:
A option
Explanation:
water gets split in photosynthesis
<u>Answer:</u>
<u>For a:</u> The given salt is acidic in nature.
<u>For b:</u> The given salt is neutral in nature.
<u>For c:</u> The given salt is neutral in nature.
<u>Explanation:</u>
Salts are formed by the combination of an acid and a base. There are 3 types of salt:
- <u>Acidic salt:</u> It is formed by the combination of strong acid and weak base.
- <u>Basic salt:</u> It is formed by the combination of a strong base and weak acid.
- <u>Neutral salt:</u> It is formed by the combination of strong acid and strong base or weak acid and weak base.
For the given options:
(a): 
This salt is formed by the combination of sodium hydroxide (strong base) and the partial dissociation of sulfuric acid (strong acid). It also has a replaceable hydrogen ion which can be produced when dissolved in water. Thus, the given salt is acidic in nature.
(b): 
This salt is formed by the combination of sodium hydroxide (strong base) and sulfuric acid (strong acid).
Thus, the given salt is neutral in nature.
(c): 
This salt is formed by the combination of ammonium hydroxide (weak base) and hydrocyanic acid (weak acid).
Thus, the given salt is neutral in nature.
Carbon dioxide is produced by any living creature such as ourselves when or plants during the process of respiration. Carbon dioxide is also produced by humans when we burn fossil fuels, ie running our cars or burning gas, coal or oil for energy.