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Ratling [72]
3 years ago
7

why do we heat the test tube in a glass beaker during a chemistry experiment and not directly over a flame?

Chemistry
1 answer:
bearhunter [10]3 years ago
7 0
It is not directly over a flame because it depends on the substance you might not want to heat it too much.you never know what could happen
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DanielleElmas [232]

Answer:

Blue: Because violet really has the most and blue is based on violet!

Explanation:

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weather balloon is filled with helium to a volume of 340 L at 30 ∘C and 751 mmHg . The balloon ascends to an altitude where the
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Answer: Thus the volume of the balloon at this altitude is 419 L

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

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V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 30^oC=273+30=303K

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

\frac{751\times 340}{303}=\frac{495\times V_2}{246}

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Thus the volume of the balloon at this altitude is 419 L

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Answer:

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