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STALIN [3.7K]
3 years ago
9

Calculate the pH of a solution that has a hydronium ion concentration of 0.0084 M

Chemistry
1 answer:
eimsori [14]3 years ago
8 0

the pH would be 1.00

I think, correct me if i'm wrong.

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An alcohol is 68.84 % C and 4.962 % H by mass. The rest is oxygen. What is the empirical formula of the alcohol? Enter the eleme
Dafna1 [17]

The empirical formula is C₇H₆O₂.

Assume that you have 100 g of the compound.

Then you have 68.84 g C and 4.962 g H.

Mass of O = (100 – 68.84 – 4.962) g = 26.20 g O.

Now, we must convert these masses to moles and find their ratios.

From here on, I like to summarize the calculations in a table.

<u>Element</u>     <u>Mass/g</u>    <u>Moles</u>    <u>Ratio</u>    <u> ×2</u>   <u>Integers</u>  

     C           68.84      5.732    3.501  7.001       7

     H            4.962    4.923    3.006  6.012      6

     O          26.20      1.638     1          2             2

The empirical formula is C₇H₆O₂.

8 0
3 years ago
The molar mass of V2O3 is<br> A. 66.94<br> B. 133.88<br> C. 149.88<br> D. 200.82
enot [183]
B. 133.88
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4 0
3 years ago
A student wonders whether a piece of jewelry is made of pure silver. She determines that its mass is 3.25 g. Then she drops it i
nydimaria [60]

Answer:

The jewelry is 2896.54_Kg/m^3 less dense than pure silver

Explanation:

Density of jewellery = (mass of jewellery) ÷ (volume of jewellery)

=3.25g ÷ 0.428mL = 0.00325Kg÷0.000000428m^3 = 7583.46Kg/m^3

The density of silver is 10490_Kg/m^3 which is (10490 - 7583.46) 2896.54_Kg/m^3 more dense than the jewellery

The density of Silver [Ag]

The weight of Silver per cubic centimeter is 10.49 grams or the weight of silver per cubic meter is 10490 kilograms, that is the density of silver is 10490 kg/m³; at 20°C (68°F or 293.15K) at a pressure of one atmospheres.

7 0
3 years ago
Which of the following describes a strong acid?
zlopas [31]
I remember learning this last y’all i jus don’t remember it might be A or C
7 0
3 years ago
What is the difference between a compound and a molecule?
Sergio [31]
A molecule is formed when two or more atoms joined together chemically. A compound is a molecule that contains at least two different elements. All compounds are molecules. Hope I helped
8 0
3 years ago
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