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harkovskaia [24]
3 years ago
9

The solution remaining from Part A, which contains 0.0100 M Ni2 and Fe2 ions, is still saturated with H2S gas, producing a conce

ntration of 0.100 M. A buffer is added to this solution to produce a pH of 1.51 . Which of the following describes correctly the effect of the addition of the buffer?a) Only NiS precipitates.
b) Only FeS precipitates.
c) Both NiS and FeS precipitate.
d) Neither NiS nor FeS precipitate.
Chemistry
1 answer:
Arturiano [62]3 years ago
5 0

Answer:I think the answer would be B

Explanation:

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The statements that are true regarding a catalyst are as follows:

It undergoes no permanent change during a reaction

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A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

A catalyst increases the rate at which a chemical reaction occurs by decreasing the activation energy of the reaction.

Since a catalyst is not used up in the reaction, the following statement applies:

It undergoes no permanent change during a reaction

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Explanation:

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If the lead can be extracted with 92.5% efficiency, what mass of ore is required to make a lead sphere with a 4.00 cm radius?
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drek231 [11]

Answer:

38.4 atm.

Explanation:

  • We can use the general law of ideal gas:<em> PV = nRT.</em>

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P₂ = ??? atm, ​V₂ = 250.0 L.

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Read more on Brainly.com - brainly.com/question/12731388#readmore

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