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3 years ago

Which is the best way to turn helium gas into liquid helium?

Chemistry

1 answer:

erma4kov [3.2K]3 years ago

7 0

To create the liquid and superfluid states you cool down helium gas to a few degrees above absolute zero

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What make up molecules

AfilCa [17]

Answer:

atom

Explanation:

because the definition of molecule is the group of an atom is called molecule

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1 year ago

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How many grams of NH3 are in 45.9

Ostrovityanka [42]

I believe it is 32.3g, I apologize if it is wrong!

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2 years ago

Which of the following statements is TRUE about the loose rocks on the surface

Ivan

Answer:B

Explanation:

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3 years ago

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Current passes through a solution of sodium chloride. In 1.00 second, 2.68×1016Na+ ions arrive at the negative electrode and 3.9

EleoNora [17]

Answer : The current passing between the electrodes is, $1.056\times 10^{-2}A$

Explanation :

First we have to calculate the charge of sodium ion.

$q=ne$

where,

q = charge of sodium ion

n = number of sodium ion = $2.68\times 10^{16}$

e = charge on electron = $1.6\times 10^{-19}C$

Now put all the given values in the above formula, we get:

$q=(2.68\times 10^{16})\times (1.6\times 10^{-19}C)=4.288\times 10^{-3}C$

Now we have to calculate the charge of chlorine ion.

$q'=ne$

where,

q' = charge of chlorine ion

n = number of chlorine ion = $3.92\times 10^{16}$

e = charge on electron = $1.6\times 10^{-19}C$

Now put all the given values in the above formula, we get:

$q'=(3.92\times 10^{16})\times (1.6\times 10^{-19}C)=6.272\times 10^{-3}C$

Now we have to calculate the current passing between the electrodes.

$I=\frac{q}{t}+\frac{q'}{t}$

$I=\frac{4.288\times 10^{-3}}{1.00}+\frac{6.272\times 10^{-3}}{1.00}$

$I=1.056\times 10^{-2}A$

Thus, the current passing between the electrodes is, $1.056\times 10^{-2}A$

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3 years ago

My science teacher trying to be cool

Helga [31]

Answer:

omg lol XD

Explanation:

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2 years ago