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lesya692 [45]
4 years ago
9

A solution was prepared by dissolving 476 mg of silver chromate (Ag2CrO4, MW = 331.73 g mol-1 ) in 633 mL of water a) moles of A

g2CrO4 b) millimoles of Ag2CrO4 c) molarity of Ag2CrO4 d) molarity of Ag+ e) molarity of CrO4 2- f) parts per million of Ag2CrO4 g) % (weight/volume) Ag2CrO4 (in units of g/mL)
Chemistry
1 answer:
Lunna [17]4 years ago
7 0

Answer:

Silver chromate, Ag2CrO4 , a sparingly soluble compound, has  a solubility product, Ksp , of 1.2 x 10-12

What is the molar  solubility of Ag2CrO4 in pure water?

Explanation:

Use the ICE approach:       Write the Ksp equilibrium:

     Ag2CrO4(s) = 2 Ag+(aq) + CrO4  2- (aq)            Ksp = 1.2 x 10 -12

I :           1         0         0

C :      (“0”)    +2x      +x

E :          1        2x        x

Note: above, we let          x = [CrO4   2- ] and so [Ag+] = 2x )

Ksp =   [Ag+] 2 [CrO4   2-]/1 = (2x)2(x) = 4x3 = 1.2 x 10-12

Or,        x3  = 3.0 x 10 -13        Take cube root of both sides:

     

        => x = 6.7 x 10 -5 M = [ CrO4   2- ] => [ Ag+ ] =2x = 1.3 x 10  -4 M

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Part A
Mamont248 [21]

Answer:

61.39%

Explanation:

The percent yield of a substance can be calculated using the formula:

Percent yield = actual yield/theoretical yield × 100%

Based on the information provided on the reaction in this question, the theoretical yield is given as 99.2g while the actual yield is given as 60.9g.

Hence, the percent yield is calculated thus:

% yield = 60.9/99.2 × 100

% yield = 0.6139 × 100

% yield = 61.39%

The percent yield is 61.39%

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3 years ago
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Explanation:

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3 years ago
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Answer:

Option B

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Now, we can see that it contains propanone which is also called acetone. So it will have a double bond with Carbon(C) and Oxygen (O).

Option B has that double bond between C and O that indicates it propanone or acetone.

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3 years ago
Where is the magnitude of force of magnetism the greatest​
Vanyuwa [196]

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The strength of the field varies depending on its location around the magnet. The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole.

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3 years ago
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insens350 [35]

Answer:

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Explanation:

Primero <u>calculamos los mililitros de etanol presentes en la primera solución</u>:

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Para calcular el nuevo porcentaje en volumen, dividimos los mililitros de etanol (<em>que permanecen iguales durante el proceso de dilución</em>) entre el volumen final.

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