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4 years ago

Hydrogen fuel cells that operate at lower temperatures use more expensive platinum electrode catalysts.

Chemistry

2 answers:

topjm [15]4 years ago

8 0

Answer:

They operate at a higher efficiency.

Explanation:

The expensive electrode catalysts like platinum are more efficient and are inert in nature. They can be used again and again and provides better surface for any reaction.

mote1985 [20]4 years ago

5 0

The correct answer is B) they operate at a higher efficiency. sorry hope the answers not to late :(

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QUICK I JUST NEED THE ANSWER!!! What's the hybridization of the central atom in OF2?

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Answer:

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3 years ago

Calculate the mass of a solute in a 10% salt solution if the mass is 350 grams.

Lyrx [107]

Answer: The mass of a solute is 35 grams

Explanation:

To calculate the mass percentage of solute, we use the equation:

$\text{Mass percent of solute}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100$

Mass percent of solute = 10 %

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Putting values in above equation, we get:

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4 years ago

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3 years ago

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3 years ago

In an aqueous chloride solution cobalt(II) exists in equilibrium with the complex ion CoCl42-. Co2 (aq) is pink and CoCl42-(aq)

kolezko [41]

Answer:

1. This reaction is (A) Exothermic .

2. When the temperature is decreased the equilibrium constant, K: (A) Increases

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Explanation:

$CoCl4^2-(aq) Co_2+(aq) + 4Cl^-(aq)$

1. The pink color predominates at low temperatures, indicating that the commodity is preferred.

This is a reaction that is exothermic.

2. As the decrease in the temperature , the equilibrium constant , K ;

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When the temperature is lowered, the equilibrium shifts to the right , that is it increases.

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3 years ago