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ElenaW [278]
3 years ago
14

A chemist is using a solution of HNO3 that has a pH of 3.75.

Chemistry
2 answers:
elena-s [515]3 years ago
5 0
What you have to keep in mind is that 
pH   =  - log[H+]
so 3.75 = -log[H+], we get [H+]=10^{-3.75},
that is [H+]≈1.77827941×10^{-4}(i see this result on calculator)
this is just what you want!

kvv77 [185]3 years ago
3 0

In the box the correct answer is 1.78 and n is equal to -4.  The answer to the next question is A.

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3 years ago
A reaction is started with both reactants and products and proceeds in the reverse direction to reach equilibrium. Which of the
nekit [7.7K]

Answer:

Option A

Explanation:

A) Yes. The reaction reaches equilibrium when the rate of reaction of the reverse reaction is equal to the rate of the forward reaction , then the only cause for the reverse reaction to be favoured is that the initial rate of the reverse was greater than the forward one.

B) No. The rate constant of the reverse reaction can be greater than the forward one  but the rate also depends on concentrations, thus a reverse reaction with greater rate constant can result in the net reaction proceeding in the forward reaction, the reverse reaction or be at equilibrium depending on the concentrations or reactants and products

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6 0
3 years ago
Which phrase describes a compound that consists of two elements
Katarina [22]
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7 0
3 years ago
What is a Boitic factor
svetoff [14.1K]

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Explanation:

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4 0
3 years ago
What is the thermal energy needed to vaporize 18.02g of water at 100°C? The Heat of Vaporization for water is 40.650 kJ/mol.
podryga [215]

Answer:

40.7 kJ

Explanation:

Applying,

q = c'n.................. Equation 1

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But,

n = mass(m)/Molar mass(m')

n = m/m'............... Equation 2

Substitute equation 2 into equation 1

q = c'(m/m')............. Equation 3

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5 0
3 years ago
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