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BigorU [14]
3 years ago
8

What converts organic remains into fossil fuels? 1.chemical reaction 2.water 3.heat and pressure

Physics
2 answers:
DanielleElmas [232]3 years ago
5 0

Answer:

3. heat and pressure

Explanation:

Sveta_85 [38]3 years ago
4 0

Answer:

3. Heat and Pressure converts organic remains into fossil fuels

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Josh tests an unknown liquid substance using litmus paper. When he compared the used litmus paper to a pH scale, the color match
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acid

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because ph below 7 is acid

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In a cold winters day, if you left a cup of water sitting outside, it could freeze. Heat is transferred out of the water. Descri
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Insulators will:
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Inhibit the flow of electrons  

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A radioactive material has a count rate of 400 per minute. It has a half life of 40 years. How long will it take to decay to a r
cestrela7 [59]

Answer:

160 years.

Explanation:

From the question given above, the following data were obtained:

Initial count rate (Cᵢ) = 400 count/min

Half-life (t½) = 40 years

Final count rate (Cբ) = 25 count/min

Time (t) =?

Next, we shall determine the number of half-lives that has elapse. This can be obtained as follow:

Initial count rate (Cᵢ) = 400 count/min

Final count rate (Cբ) = 25 count/min

Number of half-lives (n) =?

Cբ = 1/2ⁿ × Cᵢ

25 = 1/2ⁿ × 400

Cross multiply

25 × 2ⁿ = 400

Divide both side by 25

2ⁿ = 400/25

2ⁿ = 16

Express 16 in index form with 2 as the base

2ⁿ = 2⁴

n = 4

Thus, 4 half-lives has elapsed.

Finally, we shall determine the time taken for the radioactive material to decay to the rate of 25 counts per minute. This can be obtained as follow:

Half-life (t½) = 40 years

Number of half-lives (n) = 4

Time (t) =?

n = t / t½

4 = t / 40

Cross multiply

t = 4 × 40

t = 160 years.

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2 years ago
What are the characteristics of an ideal transformer ​
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3 years ago
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