3 years ago

URGENT HELP PLEASE balance equation !20 points!

Chemistry

1 answer:

yKpoI14uk [10]3 years ago

5 0

Au^2S^3+ 3H^2 = 2Au + 3H^2S

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Explanation:

Considering

$concentration_{working\ solution}\times Volume_{working\ solution}=concentration_{stock\ solution}\times Volume_{stock\ solution}$

Given that:

$concentration_{working\ solution}=?$

$Volume_{working\ solution}=25.00mL$

$Volume_{stock\ solution}=4.60mL$

$concentration_{stock\ solution}=50.04 ppm$

So,

$concentration_{working\ solution}\times 25.00mL=50.04 ppm\times 4.60mL$

$concentration_{working\ solution}=\frac{50.04\times 4.60}{25.00}\ ppm=9.21\ ppm$

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Scorpion4ik [409]

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In order to find the molarity of the solution, we first require the moles of acetic acid added. For this,we need the mass which is:

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Moles = 52.5 / 60.05
Moles = 0.874 mol

Next, we know that the molarity of a solution is:

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