Answer: Option (B) is the correct answer.
Explanation:
Numbering of carbon atoms will be done in such a way that the methyl group attached to the linear carbon chain will get least number.
Therefore, numbering will be done from left to right.
The given molecule shows that a methyl group is attached to the second carbon and rest there is a linear chain of four carbon atoms.
Thus, we can conclude that name of the given alkane is 2-methylbutane.
Answer:
<h3>The answer is 0.000002 moles</h3>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>0.000002 moles</h3>Hope this helps you
Answer:
Explanation:
Given parameters:
Hydroxide ion concentration = 5.5 x 10⁻¹⁰M
Unknown:
concentration of hydroxonium ion [H₃O⁺]= ?
pH = ?
Solution
To determine the concentration of the hydroxonium ion, we know that from the ionic product of water:
[H₃O⁺][OH⁻]= 10⁻¹⁴
[H₃O⁺] =
[H₃O⁺] =
[H₃O⁺] = 1.8 x 10⁻⁵M
To find the pH of the solution, we use the expression below:
pH = -log₁₀[H₃O⁺]
pH = -log₁₀ 1.8 x 10⁻⁵ = -(-4.74) = 4.7
Since the pH of the solution is 4.7, it is acidic.