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kiruha [24]
3 years ago
15

Why is the spot of drink placed above the water line at the start of the process

Chemistry
2 answers:
Elena L [17]3 years ago
4 0
This is the answer. Hope this helps!

Klio2033 [76]3 years ago
3 0

Answer: The solvent gives extra energy to pull up the sample and the sample will also dissolve in the solvent. That's why as precautionary measure start line should stay above the solvent in chromatography.The baseline must be above the solvent level in the TLC chamber, so the solvent does not dilute to samples so much that they dissolve.

Explanation:

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chubhunter [2.5K]

Answer:

a

Explanation:

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6 0
3 years ago
Conservation of mass question..
Nadya [2.5K]

Answer:

C

Explanation:

Conservation of mass states that mass cannot be created or destroyed.  So both sides of the equation will have the same mass.

4 0
3 years ago
Read 2 more answers
How many grams of a 14.0% (w/w) sugar solution contain 62.5<br> of sugar?
Delicious77 [7]

Answer:

m_{solution}=446.4g

Explanation:

Hello,

In this case, by-mass percent is computed in terms of the mass of the solute and the mass of the solvent as shown below:

\% m=\frac{m_{solute}}{m_{solution}} *100\%

Thus, solving for the mass of the solution, we obtain:

\frac{x}{y} m_{solution}=\frac{m_{solute}}{\% m}*100\%\\ \\m_{solution}=\frac{62.5g}{14.0\%}*100\% \\\\m_{solution}=446.4g

Regards.

3 0
3 years ago
What happens when carbon dioxide gas is cooled to -78 degree Celsius​
katrin2010 [14]

Answer:

At temperatures below −78 °C, carbon dioxide changes directly from a gas to a white solid called dry ice through a process called deposition.

3 0
2 years ago
According to gay-lussac’s law if the temperature of has increases what happens to the pressure
Mnenie [13.5K]
According to Gay-lussac’s law, if the temperature of a gas increases, then the the pressure ALSO INCREASES.
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3 years ago
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