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3 years ago

Why is hydrogen not used as fuel

Chemistry

2 answers:

meriva3 years ago

7 0

Answer:

so just like type anything right?

Explanation:

PIT_PIT [208]3 years ago

5 0

Answer: First, hydrogen is not as energy-dense as other fuels, meaning that you need a whole lot of it to do a little bit of work. ... Fuel cells are far more efficient than internal combustion engines, and a hydrogen fuel cell has cleaner emissions than an internal-combustion hydrogen engine.

Explanation:

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The two molecules will only react if they have enough energy. By heating the mixture, you are raising the energy levels of the molecules involved in the reaction. Increasing temperature also means the molecules are moving around faster and will therefore "bump" into each other more often.

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3 years ago

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Aleks [24]

Answer:

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3 years ago

What does the atomic mass of an element on the periodic table represent?

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3 years ago

Please awnser the fill in blanks don’t mind the top or bottom pls help !!!!

zysi [14]

Can’t see the problems

7 0

3 years ago

Pls help me !!!! Is for chemistry

Sphinxa [80]

Answer:

Explanation:

1) Molarity of the solution is (0.50/0.75)x1 = 0.66666 Mol/L

2) Molar mass of NaCl is 23+35 = 58g

Molarity = (0.5/58)/0.075 = 0.115 Mol/L

3) Molar mass of $Li_{2}SO_{4}$ = 7x2 + 32 + 16x2 = 78g

Molarity = (734/78)/0.875 = 10.754 Mol/L

5) Molar mass of $Pb(C_{2}H_{3}O_{2})_{4}$

= 207.2 + ((12x2) + (1x3) + (16x2))x4

= 207.2 + (24+3+32)x4 = 443.2g

Molarity = (0.0672/443.2)/0.1335 = 0.001135 Mol/L

6) Both are the same.

Solution 1 Molarity = 1.0/1.0 = 1 Mol/L

Solution 2 Molarity = 1.0/1.0 = 1 Mol/L

Molarities of the solutions are the same.

7 0

3 years ago