pH = -log[H₃O⁺(aq)]
here the pH is given as 2.40.
Hence,
2.40 = -log[H₃O⁺(aq)]
log[H₃O⁺(aq)] = -2.40
[H₃O⁺(aq)] = 3.98 x 10⁻³ M
= 4.0 x 10⁻³ M
Hence, the hydronium ion concentration in juice is 4.0 x 10⁻³ M.
Since, the pH is less than 7, the juice is acidic.
Just be nice, and compliment her
The average speed of the horse for the entire motion is 66.67 m/s.
The given parameters;
- <em>distance traveled by the horse, d = 1 km = 1,000 m</em>
- <em>time of motion of the horse, t = 15 s</em>
The average speed of the horse is calculated by dividing the total distance traveled by the horse by the time of motion.
The average speed of the horse is calculated as follows;

Thus, the average speed of the horse for the entire motion is 66.67 m/s.
Learn more here: brainly.com/question/17289046
Answer:
Hydrogen carbonate is an acid, sodium Sulfate is a salt.
Explanation:
Hydrogen carbonate is a weak acid because it will partially ionize in water while sodium sulfate is a neutral salt which is formed when neutralization of acid and base takes place