Distillation is a process of separating the component substances from a liquid mixture by selective evaporation and condensation.
Carbonic acid is produced when a strong acid reacts with the bicarbonate buffer system in the human body.
B is true because plants can only use nitrogen in the form of nitrates, no other living thing needs nitrogen therefore the percentage of nitrogen in the atmosphere is 79%
1. Al(C₂H₅)₂OCl₃
Al(C₂H₅)₂OCl₃ is made from 5 different elements. They are Al, C, H, O and Cl. Number of atoms in each element can be found as follows.
number of Al atoms = 1
number of C atoms = 2 x 2 = 4
number of H atoms = 5 x 2 = 10
number of O atoms = 1
number of Cl atoms = 3
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Total number of atoms = 1 + 4 + 10 + 1 + 3 = 19
2. </span>BCl₃<span>
BCl</span>₃ is a simple neutral molecule. It consists of 2 different elements as B and Cl. Total number of atoms is 4. Number of atoms can be calculated as follows.
number of B atoms = 1
number of Cl atoms = 3
Total number of atoms = 1 + 3 = 4<span>
3. </span>H₂O + H⁺
H₂O makes H₃O⁺ (hydronium ion) with H⁺ which is a positive ion. H₃O⁺ consists of two different elements as H and O. Number of atoms are as follows.
number of H atoms = 3
number of O atoms = 1
Total number of atoms = 3 + 1 = 4
The correct answer is A because pollution is a leading factor of pollution.
The accumulation of toxins in the pond from the poor air quality will lead to a change in the acidity of the pond.
I hope I helped! :)
