Answer:
pH = 6.8124
Explanation:
We know pH decreases with increase in temperature.
At room temperature i.e. 25⁰c pH of pure water is equal to 7
We know
Kw = [H⁺][OH⁻]...............(1)
where Kw = water dissociation constant
At equilibrium [H⁺] = [OH⁻]
So at 37⁰c i.e body temperature Kw = 2.4 × 10⁻¹⁴
From equation (1)
[H⁺]² = 2.4 × 10⁻¹⁴
[H⁺] = √2.4 × 10⁻¹⁴
[H⁺] = 1.54 × 10⁻⁷
pH = - log[H⁺]
= - log{1.54 × 10⁻⁷}
= 6.812
<span>Liquid alcohol will change to vapor when temperature reaches the : D. Boiling point
When the temperature reach the boiling point, the molecule that held the liquid's particle together will break free and the particle will scatter.
This will cause the liquid substance to undergone a transformation into a Gaseous form</span>
Answer:
A mechanical wave travels through matter, while an electromagnetic wave travels through empty space
Explanation:
A mechanical wave requires material medium for propagation but electromagnetic wave not
Answer: dative covalent bond
Explanation: one hydrogen ion is transferred from HCl to the lone pair on NH3 . This particular hydrogen only has its nucleus transferred—its electrons remain with chlorine. So, the bond between this particular hydrogen atom and the central nitrogen is a dative covalent bond.
