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Elina [12.6K]
3 years ago
6

What is pH a measure of?

Chemistry
2 answers:
s344n2d4d5 [400]3 years ago
4 0
It measures the acidity/basic level, that rules A out
hope this helped a little
atroni [7]3 years ago
3 0

Answer:

c. hydrogen-ion concentration

Explanation:

pH is a logarithmic measure of the hydrogen ion concentration of an aqueous solution pH = -log[H + ] where log is the base 10 logarithm and [H + ] is the hydrogen ion concentration in moles per liter

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Assign oxidation numbers to the element in each of the following compounds. Remember an oxidation number is for one atom of the
worty [1.4K]

Answer:

a.  x = + 2

b.  x = + 3

c.  x = + 2

d.  x = + 3

Explanation:

The oxidation number is a formal charge assigned to an atom present in a molecule or formula unit or ion based on some arbitrary rules.

a.

<u>Hg</u>O

The oxidation number of Hg in HgO is:

x + (-2) = 0

x = +2

b.

<u>Al₄</u>C₃

The oxidation number of Al in Al<u>₄</u>C₃ is:

4x +(3 × -4) = 0

4x - 12 = 0

4x = +12

x = 12/4

x = +3

c. CrF₂

x + ( 2 × - 1) = 0

x - 2 = 0

x = + 2

d. Fe₂S₃

2x + ( 3 × - 2) = 0

2x + (-6) = 0

2x = 6

x = 6/2

x = +3

7 0
3 years ago
In Thomson's plum pudding model the mass of the atom is in the A.electrons. B.matter between the electrons. C.nucleus. D.proton
balu736 [363]
A electrons is the best choice!
6 0
3 years ago
Read 2 more answers
10. Liquid changing to gas only at the surface is called
mina [271]

Answer:

Evaporation

Explanation:

Though it doesn't require high temperatures to do so

3 0
3 years ago
Is a particle with a positive charge.:)
tatyana61 [14]
Proton is the answer
8 0
3 years ago
A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of
Semenov [28]

Answer:

0.0611M of HNO3

Explanation:

<em>The concentration of the NaOH solution must be 0.1198M</em>

<em />

The reaction of NaOH with HNO3 is:

NaOH + HNO3 → NaNO3 + H2O

<em>1 mole of NaOH reacts per mole of HNO3.</em>

That means the moles of NaOH used in the titration are equal to moles of HNO3.

<em>Moles HNO3:</em>

12.75mL = 0.01275L * (0.1198mol / L) = 0.0015274 moles NaOH = Moles HNO3.

In 25.00mL = 0.025L -The volume of the aliquot-:

0.00153 moles HNO3 / 0.025L =

<h3> 0.0611M of HNO3</h3>
7 0
3 years ago
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