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OverLord2011 [107]
3 years ago
9

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

Chemistry
2 answers:
topjm [15]3 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]3 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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With your mind. Boom. Lol I'm sorry I don't know I just need points
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3 years ago
Acetylsalicylic acid (C9H8O4) is a monoprotic acid commonly known as aspirin. A typical aspirin tablet, however, contains only a
pashok25 [27]

Answer:

6 grains

Explanation:

The equation of the reaction between NaOH and aspirin is;

C9H8O4(aq) + NaOH (aq) ------>C9H7O4Na(aq) + H2O(l)

Amount of NaOH reacted = concentration × volume = 0.1466 M × 14.40/1000 L = 2.11 × 10^-3 moles

Given that aspirin and NaOH react in a mole ratio of 1:1 from the balanced reaction equation above, the number of moles of aspirin reacted is 2.11 × 10^-3 moles

Hence mass of aspirin reacted = 2.11 × 10^-3 moles × 180.2 g/mol = 0.38 g

If 1 grain = 0.0648 g

x grains = 0.38 g

x= 0.38 g/0.0648 g

x= 6 grains

3 0
3 years ago
As carbon dioxide enters systemic blood, it causes more oxygen to dissociate from hemoglobin, which in turn allows more CO2 to c
vagabundo [1.1K]

Answer:

The correct answer is "False".

Explanation:

It is false that as carbon dioxide enters systemic blood, it causes more oxygen to dissociate from hemoglobin. Once an atom of oxygen binds to hemoglobin, hemoglobin change its shape and makes easier than a second and a third atom of oxygen binds towards it. This change in conformation makes no possible that carbon dioxide can cause that oxygen dissociates from hemoglobin.

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3 years ago
The formula HCl stands for ____.
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HCl :

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answer A

hope this helps!
7 0
3 years ago
What experimental evidence can you provide that the product isolated is 1-bromobutane?
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The experimental evidence that you could provide that <span> the product isolated is 1-bromobutane would be the changes that happens that are observable by the naked eye. Hope this helps. Have a nice day. Feel free to ask more questions.</span>
5 0
3 years ago
Read 2 more answers
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