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Advocard [28]
3 years ago
15

Two students were doing an experiment which involved adding potassium sulfate powder to water. They added one teaspoon of potass

ium sulfate to the water and stirred it, and all the powder dissolved. They continued to do this until, after the fourth teaspoon, no more potassium sulfate would dissolve.
As more potassium sulfate dissolves in the water, the mixture becomes

a. more concentrated.
b. less concentrated.
c. dilute.
d. more cloudy.
Chemistry
1 answer:
lana [24]3 years ago
7 0

Answer:

less concentrated

Explanation:

because it will get dissociated into more ions

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Current passes through a solution of sodium chloride. In 1.00 second, 2.68×1016Na+ ions arrive at the negative electrode and 3.9
EleoNora [17]

Answer : The current passing between the electrodes is, 1.056\times 10^{-2}A

Explanation :

First we have to calculate the charge of sodium ion.

q=ne

where,

q = charge of sodium ion

n = number of sodium ion = 2.68\times 10^{16}

e = charge on electron = 1.6\times 10^{-19}C

Now put all the given values in the above formula, we get:

q=(2.68\times 10^{16})\times (1.6\times 10^{-19}C)=4.288\times 10^{-3}C

Now we have to calculate the charge of chlorine ion.

q'=ne

where,

q' = charge of chlorine ion

n = number of chlorine ion = 3.92\times 10^{16}

e = charge on electron = 1.6\times 10^{-19}C

Now put all the given values in the above formula, we get:

q'=(3.92\times 10^{16})\times (1.6\times 10^{-19}C)=6.272\times 10^{-3}C

Now we have to calculate the current passing between the electrodes.

I=\frac{q}{t}+\frac{q'}{t}

I=\frac{4.288\times 10^{-3}}{1.00}+\frac{6.272\times 10^{-3}}{1.00}

I=1.056\times 10^{-2}A

Thus, the current passing between the electrodes is, 1.056\times 10^{-2}A

4 0
3 years ago
A mixture is -
garik1379 [7]
<span>a. a chemical combination of two or more different materials. 

For example: </span>For example, air is a mixture of gases, containing N, O, Ar, CO2
4 0
3 years ago
An experiment was undertaken to determine the effect of different liquids upon the swelling of a vulcanized sample of natural ru
N76 [4]

Answer:

a. 459.86 gmol

b. 0.591

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

7 0
3 years ago
Name the process which takes place when propene gas molecules are converted into a giant molecule​
marissa [1.9K]

Answer:

Polymerization, any process in which relatively small molecules, called monomers, combine chemically to produce a very large chainlike or network molecule, called a polymer. The monomer molecules may be all alike, or they may represent two, three, or more different compounds.

7 0
3 years ago
Antimony has 2 naturally occurring isotopes. The mass of antimony-121 is 120.904 amu and the mass of antimony-123 is 122.904 amu
Sav [38]
Wow, now this one is a hard one, took me quite a while to figure it out but here it is:
120.904(x)+122.904(1-x)=121.76 \\ &#10;120.904x-122.904x+122.904=121.76 \\ &#10;-2x+122.904=121.76 \\ &#10;-2x=-1.144 \\ &#10;x=.572  \\ &#10;1-.572=.428
The abundances of the two isotopes is:
Antimony-121 = 57.2%
Antimony-123 = 42.8%
6 0
4 years ago
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