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3 years ago

An empty fuel tank can still contain ________ and therefore can be even more dangerous than one full of liquid fuel.

Chemistry

2 answers:

Serggg [28]3 years ago

8 0

Answer:

Fumes / vapors.

Explanation:

An empty tank appears to be non dangerous as it has no liquid fuel. However even if tank is empty there may be some drops of left over liquid fuel.

These drops make the container filled with dangerous vapors that are more prone to catch fire as compared to gasoline.

Even a small spark may cause a severe explosion.

alexgriva [62]3 years ago

5 0

Answer:

An empty fuel tank can still contain "fumes"

Explanation:

Even if there is not enough liquid fuel, whatever is left in the tank creates fumes, which is more combustible than liquid gas.

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For every 1lb you lose do to sweating you should consume ___ oz of water.

sdas [7]

Answer:

For every pound lost, replace it with 16 to 20 ounces of fluid

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2 years ago

Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el

Dovator [93]

Answer: 406 hours

Explanation:

$Q=I\times t$

where Q= quantity of electricity in coloumbs

I = current in amperes = 39.5 A

t= time in seconds = ?

The deposition of copper at cathode is represented by:

$Cu^{2+}+2e^-\rightarrow Cu$

$96500\times 2=193000$ Coloumb of electricity deposits 1 mole of copper

i.e. 63.5 g of copper is deposited by = 193000 Coloumb

Thus 19.0 kg or 19000 g of copper is deposited by = $\frac{193000}{63.5}\times 19000=57748032$ Coloumb

$57748032=39.5\times t$

$t=1461975sec=406hours$ (1hour=3600s)

Thus it will take 406 hours to plate 19.0 kg of copper onto the cathode if the current passed through the cell is held constant at 39.5 A

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3 years ago

Physical science:verification on newton's second law

mezya [45]

Explanation:

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2 years ago

Which is the IUPAC name for NO?

Vanyuwa [196]

Answer:

Nitrogen (ii) oxide

Explanation:

To know the IUPAC name for NO, we shall determine the oxidation number of N in NO.

NOTE: The oxidation number of oxygen (O) is always – 2.

Thus the oxidation number of N in NO can be obtained as follow:

N + O = 0 (ground state)

N + (– 2) = 0

N – 2 = 0

Collect like terms

N = 0 + 2

N = +2

Thus, the oxidation number of Nitrogen (N) in NO is +2.

Therefore, the IUPAC name for NO is Nitrogen (ii) oxide

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2 years ago

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What causes different colors to appear in the sky?

katrin [286]

Answer:

Molecules and small particles in the atmosphere change the direction of light rays, causing them to scatter. Scattering affects the color of light coming from the sky.

Explanation:

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3 years ago