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Alisiya [41]
3 years ago
6

1.Which Statement best describes the use of a catalyst in a fuel cell?

Chemistry
2 answers:
Bingel [31]3 years ago
6 0

Answer:

D. It Increases reaction rates.

Explanation:

mixer [17]3 years ago
4 0

Answer: D. It Increases reaction rates.

Explanation:

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Choose the aqueous solution with the highest vapor pressure. These are all solutions of nonvolatile solutes and you should assum
VashaNatasha [74]

Answer:

They all have about the same vapor pressure.

Explanation:

The elevation of the vapor pressure is related to the elevation of the boiling point: for higher vapor pressure, the liquid will boils at a low temperature.

When a nonvolatile compound is added to the liquid, the boiling temperature increases, in an effect called ebullioscopy, and that difference of temperature can be calculated by:

ΔT = K*W*i

Where K is a constant for the liquid, W is the molality, and i is the van't Hoff factor, which depends on the dissociation of the compound.

i = dissociated particles/total particles

For the molecules compounds given, the ideal van't Hoff factor is 1.

The molality can be calculated by:

W = n1/m2

Where n1 is the number of moles of the solute and m2 is the mass of the solvent. In this case, all the solutes have the same number of moles for the same volume of the solution because they have the same concentration, so the change in temperature is the same for all of them.

Then, they all have about the same vapor pressure.

7 0
3 years ago
What effect would a decrease or increase in barometric pressure have on the boiling point
sladkih [1.3K]

Answer:

Pressure Affects the Boiling Point

Atmospheric pressure influences the boiling point of water. When atmospheric pressure increases, the boiling point becomes higher, and when atmospheric pressure decreases (as it does when elevation increases), the boiling point becomes lower.

Explanation:

i think it will help you

5 0
3 years ago
PLEASE HELPPPP IM GIVING THE TEST RN
Tom [10]

Answer:

answer is c

Explanation:

single replacement

6 0
3 years ago
Explain why chemistry affects all aspects of life and most natural events
Alecsey [184]

Chemistry affects all aspects of life and most natural events because all living and nonliving things are made of matter.

6 0
3 years ago
Is krypton a anion or cation?
Zarrin [17]

Answer:

krypton is a cation

magnesium is also a cation

aluminium is a anion

and , silicon is cation

7 0
2 years ago
Read 2 more answers
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