CHEMISTRY HIGH SCHOOL

What is the pH of a solution with [H+] = 1.25 mc015-1.jpg 10–10 M?

Answers

Answer 1
Answer:

Answer : The pH of a solution is, 9.903

Explanation : Given,

Concentration of hydrogen ion = 1.25* 10^(-10)M

pH : It is defined as the negative logarithm of hydrogen ion concentration.

Formula used :

pH=-\log [H^+]

Now put the value of hydrogen ion concentration in this formula, we get the pH of a solution.

pH=-\log (1.25* 10^(-10))

pH=9.903

Therefore, the pH of a solution is, 9.903
Answer 2
Answer: [ H+]=10-pH
it become
[H+]=0.1

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the answer is B
im pretty sure measure wherever the bottom of the curved line is :)

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It is called the proton

An atom in the ground state contains 8 valence electrons this atom is classified as a

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Noble Gas. Metals have 1 or 2 Valence Electrons. Halogens have 7 Valence Electrons. Semi-Metals can have different amounts.

Answer:

Noble gas

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Translation

Compared to a 2.0 M aqueous solution of NaCl at 1 atmosphere, a 3.0 M aqueous solution of NaCl at 1 atmosphere has a(1) lower boiling point and a higher freezing point
(2) lower boiling point and a lower freezing point
(3) higher boiling point and a higher freezing point
(4) higher boiling point and a lower freezing point

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The correct answer is option 4. A 3.0 M aqueous solution of NaCl has a higher boiling point and a lower freezing point than a 2.0 M aqueous solution of NaCl where both are at 1 atmosphere. This is explained by the colligative properties of solutions. For the two properties mentioned, the equation for the calculation of the depression and the elevation is expressed as: ΔT = -Km and ΔT = Km, respectively. As we can see, concentration and the change in the property has a direct relationship.

Elements in the same vertical column share similar chemical properties. Which statement best explains this?a. They have the same number of neutrons in their nucleus.
b. They have similar physical qualities.
c. They have identical numbers of electrons in the outermost level.
d. They were discovered in the same location.

Answers

they have identical numbers of electrons in the outermost level
Answer:C

Explanation:Most vertical columns share similiar chemical properties because they have identical numbers of electrons in the outermost level.

Hope this helped:)

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