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Nana76 [90]
2 years ago
13

Please help me (40 points)

Chemistry
1 answer:
Maksim231197 [3]2 years ago
4 0

Answer:

P=15

N=16

Explanation:

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When the above equation is balanced the coefficients in order are
Softa [21]
The reaction is as follow,

                   Ca(OH)₂  +  Al₂(SO₄)₃    →     CaSO₄  +  Al(OH)₃

Ca are balance on both sides, 

There are 2 Al at left side and one at right so, multiply Al(OH)₃ by 2 to balance,
So,
                   Ca(OH)₂  +  Al₂(SO₄)₃    →     CaSO₄  +  2 Al(OH)₃

Now, Ca and Al are balanced, now balance SO₄, which is 3 at left hand side and one at right hand side, so multiply CaSO₄ on right side by 3, so,

                   Ca(OH)₂  +  Al₂(SO₄)₃    →     3 CaSO₄  +  2 Al(OH)₃

Again Ca got imbalance, so multiply Ca(OH)₂ by 3 to balance Ca, So,

                   3 Ca(OH)₂  +  Al₂(SO₄)₃    →     3 CaSO₄  +  2 Al(OH)₃

The Equation is balance now with respect to every element.

Result:
          The Ratio is 3 : 1 : 3 : 2, so, Option-G is correct.
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If ice is added to a large fish tank and a small fish bowl, both at the same termperature, the large fish tank's water will cool
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because the smaller bowl of water has less volume to cool off with the ice than the large fish tank
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You are less likely to see a total solar eclipse than a total lunar eclipse because
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<span>Your answer would be ....A.the moon’s shadow covers all of Earth during a solar eclipse.</span>
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byyou
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oz
fratt
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eldorado  (I think these are the answers)
6 0
3 years ago
A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0 M chromium(III) ion solution and another electr
svetlana [45]

Answer: The potential of the following electrochemical cell is 1.08 V.

Explanation:

E^0_(Cr^{3+}/Cr)=-0.74V[/tex]

E^0_(Cu^{2+}/Cu)=0.34V[/tex]

The element  with negative reduction potential will lose electrons undergo oxidation and thus act as anode.The element with positive reduction potential will gain electrons undergo reduction and thus acts as cathode.

Here Cr undergoes oxidation by loss of electrons, thus act as anode. copper undergoes reduction by gain of electrons and thus act as cathode.

2Cr+3Cu^{2+}\rightarrow 2Cr^{3+}+3Cu

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Where both E^0 are standard reduction potentials, when concentration is 1M.

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Thus the potential of the following electrochemical cell is 1.08 V.

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