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blagie [28]
3 years ago
6

How do carbon isotopes in fossil fuels differ from the atmosphere and from biomass?

Chemistry
1 answer:
loris [4]3 years ago
4 0
Carbon bound in fossil fuels has different isotopes than carbon in atmosphere. Fossil fuels are underground and cosmic rays do not affect carbon in them same as atmosphere carbon. Carbon in fossil fuels that is underground longer than ten thousand years has only C-12 isotope and not C-14.
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Please help me I can’t figure it out
lukranit [14]
The answer is A. because as you can see it pulls the force
8 0
3 years ago
A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. The temperature of the system is raise
Black_prince [1.1K]

Answer:

There is 96200 J or 96 kJ of heat released.

Explanation:

<u>Step 1: </u>Data given

Mass of helium = 250 grams

Temperature = 200 K

Temperature is raised by 74 K

The heat capacity of helium = 20.8 J/mol*K

Molecular weight for helium = 4 g/mol

<u>Step 2:</u> Calculate moles of Helium

Moles of Helium = mass of Helium / molar mass of helium

Moles of helium = 250 grams / 4g/mol

Moles of helium = 62.5 moles

<u>Step 3:</u> Calculate heat

Q = n*c*ΔT  or

⇒ with Q = the heat released in Joule

⇒ with n = moles of helium = 62.5 moles

⇒ with c = the heat capacity of helium = 20.8 J/mol*K

⇒ with ΔT = the change in temperature = T2 - T1 = 74 K

Q = 62.5 mol * 20.8 J/mol*K * 74 K

Q = 96200 J = 96 kJ

Since the temperature is raised, this is an exothermic reaction. The heat is released.

There is 96200 J or 96 kJ of heat released.

8 0
3 years ago
PLZ HELP OR WILL FAIL!!
lianna [129]
Hey there!

Label A: Sublimation
Label B: Condensation
Label C: Melting

Remember sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. Condensation is the conversion of a vapor or gas to a liquid. Melting is becoming liquefied by heat.

Hope this helps!
5 0
2 years ago
What is the value of Avogadro's constant?​
diamong [38]

Answer:

6.02214154 x 1023

Explanation:

6 0
2 years ago
Some growth regulators are useful to farmers and gardeners.<br> O True<br> O False
lisov135 [29]

Answer:

True

Explanation:

The first artificial use of a PGR was to stimulate the production of flowers on pineapple plants. They are now used widely in agriculture. Plant hormones are also used in turf management to reduce the need to mow, to suppress seedheads, and to suppress other types of grass.

3 0
2 years ago
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