Answer:
pH = 6.80. The aqueous solution is slightly acid
If pH is 7.00 at 37°C, solution is neutral
Explanation:
2H₂O ⇄ H₃O⁺ + OH⁻ Kw = 2.4×10⁻¹⁴
To determine the pH of a solution, we must consider the [H₃O⁺]
[H₃O⁺] . [OH⁻] = 2.4×10⁻¹⁴
[H₃O⁺] = [OH⁻] → √2.4×10⁻¹⁴ = [H₃O⁺]
1.55×10⁻⁷ = [H₃O⁺]
pH = - log 1.55×10⁻⁷ = 6.80
pH = 7 → neutral
pH < 7 → acid
pH > 7→ basic
Answer:
(1) Rate = k[NO2]^2[CO]
(2) The rate of the reaction is 1.195 Ms^-1
Explanation:
(1) Equation of reaction
NO2 + CO = NO + CO2
The reaction is second-order in NO2 and zero-order in CO
Therefore, rate = k[NO2]^2[CO]^0
(2) Rate = k[NO2]^2[CO]^0
k = 0.790 M^-1s^-1
[NO2] = 1.23 M
[CO] = 0.221 M
Rate = 0.79×1.23^2×0.221^0 = 1.195 Ms^-1
Triglyceride is a molecule constituted by one one molecule of glycerol and 3 molecules of fatty acids. The structure of a glycerol is like a letter "E", where the vertical line ( | ) is the glycerol and the three horizontal lines are long chains of organic acids, each with one COOH group, called fatty acids.<span> The answer is that the other 3 molecules that make up a triglyceride are fatty acids.</span>
Answer:
The pair will be:
- NH3/NH4⁺
- ClO⁻/HClO
Explanation:
A conjugate acid is formed after a base has reacted/accepted a proton.
Since H2O is amphiprotic, we can use it as the acid.
NH3 + H2O ⇄ NH4⁺ + OH⁻
ClO⁻ + H2O ⇄ HClO + OH⁻
after reacting, the base form conjugate acid.
Whiskers and beaks
are two examples of _____. electroreceptors mechanoreceptors olfactory
receptors photoreceptors
Whiskers and beaks
are two examples of olfactory receptors. An olfactory receptor is a smell
receptor that contains a protein capable of binding odor molecules that plays
the central role of smell.
