What are fossil fuels made from?

Chemistry

2 answers:

Arturiano [62]3 years ago

8 0

Answer:

organic material

Explanation:

Effectus [21]3 years ago

5 0

Answer:

D. organic material

Explanation:

Fossil fuels are made of buried remains of plants and animals from millions of years ago.

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If you move 60 meter in 10 seconds, what is your speed

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3 years ago

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Calculate the molar mass of al2(cro4)3

just olya [345]

Molar mass of Al₂(CrO₄)₃ is the mass of one mole of Al₂(CrO₄)₃
one mol =weight of Al₂(CrO₄)₃ in g /one mol
1) We have to find the atomic mass (in a periodic talbe) of the following elements (in u)
Al=26.98 u
Cr=52 u
O=16 u

2)We calculate the atomic weight of Al₂(CrO₄)₃
Atomic weight (Al₂(CrO₄)₃)=2(26.98 u)+3[(52 u)+4(16 u)]=
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3) One mole of (Al₂(CrO₄)₃ ) have 401.96 g of Al₂(CrO₄)₃

molar mass=401.96 g/ mol

answer: 401.96 g/ mol

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At 1000°C, cyclobutane (C4H8) decomposes in a first-order reaction, with the very high rate constant of 79 1/s, to two molecules

leva [86]

Explanation:

It is known that for first order reaction, the equation is as follows.

t = $\frac{2.303}{K} log \frac{[C_{4}H_{8}]_{o}}{[C_{4}H_{8}]_{t}}$