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3 years ago

15

A sample of metal is heated until it melts and begins to glow red. When it cools, it appears the same color as it did before it

was heated. This is evidence that a chemical reaction occurred. is it true or false

1 answer:

frosja888 [35]3 years ago

8 0

Answer:

Explanation:

trueeeeeeeeeeeeeeeeeeeeeeeeeee

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If 00810 mol neon gas at the particular temperature and pressure occupies a volume of 214 mL ehat volume would 0.00684 mol neon

Grace [21]

Answer:

$V_2=181mL$

Explanation:

Hello,

In this case, Avogadro's relationship allows us to relate the moles and the volume of a gas at an initial condition and an a final one as shown below:

$\frac{n_1}{V_1}=\frac{n_2}{V_2}$

Thus, the volume that 0.00684 mol of neon the same pressure and temperature is computed below as required:

$V_2=\frac{V_1*n_2}{n_1}=\frac{214mL*0.00684mol}{0.00810mol} \\\\V_2=181mL$

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