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Damm [24]
2 years ago
6

Balance the equation, show steps:Ag (s) + H2S (g) + O2 (g) ⟶ Ag2S (s) + H2O (l)

Chemistry
1 answer:
ehidna [41]2 years ago
5 0
4Ag + 2H2S + O2 -> 2Ag2S + 2H20 i’m pretty sure that’s correct
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3 years ago
. How many milliliters of 0.20 M HCl are needed to exactly neutralize 40. milliliters of 0.40 M KOH
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Answer:

V_{HCl}=80mL

Explanation:

Hello,

In this case, for the given reactants we identify the following chemical reaction:

KOH+HCl\rightarrow KCl+H_2O

Thus, we evidence a 1:1 molar ratio between KOH and HCl, therefore, for the complete neutralization we have equal number of moles, that in terms of molarities and volumes become:

n_{HCl}=n_{KOH}\\\\M_{HCl}V_{HCl}=M_{KOH}V_{KOH}

Hence, we compute the volume of HCl as shown below:

V_{HCl}=\frac{M_{KOH}V_{KOH}}{M_{HCl}} =\frac{0.40M*40mL}{0.20M} \\\\V_{HCl}=80mL

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