Answer:
Over time it has been changes
Explanation:
A law is something that is in nature and predicts what the result will be without having to explain
A theory is always changing when new information is provided and supports what is being tested.
So this is why it is describes as a theory instead of a law.
<u>Answer:</u> The bronsted acids for the given reaction are
<u>Explanation:</u>
According to the Bronsted-Lowry conjugate acid-base theory:
- An acid is defined as a substance which looses or donates protons and thus forming conjugate base.
- A base is defined as a substance which accepts protons and thus forming conjugate acid.
For the given chemical equation:
For the forward reaction, looses 1 proton to form and thus acts as bronsted acid.
For the backward reaction, looses 1 proton to form and thus acts as bronsted acid
Hence, the bronsted acids for the given reaction are
Answer:
9.519e^-2
Explanation:
To accurately show the number in scientific notation, you need to move the decimal place to the left 2 spaces. Because you are moving the decimal place to the left, the exponent will be a negative number. Because the decimal place moves 2 units to the left, the exponent will be a -2.
Therefore, the answer in correct scientific notation is:
951.9 ----------> 9.519e^-2
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
You are right sugar is a mixture and salad, water and potassium are all wrong.
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