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iren [92.7K]
2 years ago
6

Which is a NOT a freshwater source on Earth?

Chemistry
1 answer:
cluponka [151]2 years ago
7 0

Answer:

B the atmosphere it's not on earth and I'm pretty sure  the atmosphere doesn't have water in

Explanation:

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Let the ED50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. If the
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Explanation:

1) The ED50 value of ethanol = 470 mg per kg of person body = 470 mg/kg

Mass of person = 70 kg

Amount of ethanol required by person of 70 kg to get buzz:

70 kg\times 470 mg/kg=32,900 mg

A 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz is 32,900 mg of ethanol.

Mass of ethanol in beer bottle = 13.9 g

Amount of ethanol required by person of 70 kg to get buzz:

70 kg\times 470 mg/kg=32,900 mg =32.9 g

1 mg = 0.001 mg

Bottles of beer would a 70 kg party goer need to consume:

=\frac{32.9 g}{13.9 g}=2.367\approx 2

Bottles of beer would a 70 kg party goer need to consume a 50% chance of getting a buzz is 2.

2)The LD50 value of ethanol = 4,700 mg per kg of person body = 4,700 mg/kg

Mass of person = 70 kg

Amount of ethanol required by person of 70 kg  to have a 50% chance of dying:

70 kg\times 4,700 mg/kg=329,000 mg

A 70 kg party goer need to quickly consume in order to have a 50% chance of dying is 329,000 mg of ethanol.

Mass of ethanol in Jack Daniels bottle = 356 g

Amount of ethanol required by person of 70 kg  to have a 50% chance of dying:

70 kg\times 4,700 mg/kg=329.000 mg =329 g

1 mg = 0.001 mg

Bottles of Jack Daniels would a 70 kg party goer need to consume to have a 50% chance of dying:

=\frac{329 g}{356 g}=0.923\approx 1

Bottles of  Jack Daniels would a 70 kg party goer need to consume to have a 50% chance of dying is 1.

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What is true of both galvanic and electrolytic cells?
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reduction happens at the cathode

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<span>4,800 pounds (2,200 kg) of ammonium nitrate fertilizer, nitromethane, and diesel fuel mixture.</span>
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