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3 years ago

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells?

Chemistry

2 answers:

bixtya [17]3 years ago

5 0

The last option, fossil fuels are non-renewable sources.

melisa1 [442]3 years ago

3 0

Answer: Burning fossil fuels contributes to climate change.

Fossil fuels are nonrenewable.

Explanation:

The fossil fuels are the nonrenewable sources of energy where as the hydrogen fuel cells are the renewable sources of energy which uses the energy harnessed from the hydrogen ions to generate electricity.

The burning of the fossil fuels to generate thermal energy can produce huge amounts of the poisonous and polluting gases liberated into the atmosphere. But the hydrogen fuel cells does not produce any polluting gas.

Fossil fuels are non- renewable as they cannot be used again after once used. But the hydrogen fuel cells are the renewable source of energy.

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Name the following ether: OCH2CH3

Lelu [443]

The name of the given ether is ethyl benzyl ether .

<h3>What are ethers?</h3>

Ethers are organic compounds formed when nan oxygen atom is bonded to two alkyl or aryl groups.

Ethers usually have relatively high boiling points as a result of the central oxygen atom. An example of an ether, is ethyl propyl ether

The name of the given ether is ethyl benzyl ether as it has a benzyl and ethyl group attached to the oxygen atom.

In conclusion, ethers are characterized by an oxygen atom bonded to two alkyl or aryl groups.

Learn more about ethers at: brainly.com/question/20772030

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2 years ago

If the root word "derm” means "skin,” which of these words means "the study of skin diseases and treatment”? dermatologically de

motikmotik

I believe it’s Dermatology

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2 years ago

Read 2 more answers

Necesito ayuda porfavor

AlexFokin [52]

Answer:

thank for the points ❤️

Explanation:

pa breinlyest po

8 0

3 years ago

Calculate the number of carbon atoms contained in 5.6 g of C2H4

miss Akunina [59]

Molecular mass of C₂H₄ is,

M = 2×12 + 4×1 g/mol

M = 28 g/mol

Moles of C₂H₄ in 5.6 g of C₂H₄ :

n = 5.6/28 mol

n = 0.2 mol

Now, 1 mol of C₂H₄ contains 2 moles of carbon.

So, number of moles of carbon are :

n = 0.4 mol

We know, 1 mol of any atom contains 6.022 × 10²³ atoms.

So, number of carbon atoms are :

$N = 0.4 \times 6.022\times 10^{23} \\\\N = 2.409 \times 10^{23}$

Hence, this is the required solution.

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3 years ago

The molecular formula for caffeine is CsHioN402. Which of the following elements is not found in caffeine?

katrin [286]

The element helium isn't found in caffeine

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3 years ago