Answer:
Explanation:
When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted. This happens because all the heat energy goes into breaking the bonds of the ice's crystal lattice structure. :)
Answer:
By using different techniques.
Explanation:
For example: Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material. Filtration separates solids of different sizes.
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Answer:
78 moles of the solute
Explanation:
From the question;
- Molarity of the solution is 6.50 M
- Volume of the solution is 12.0 L
We want to determine the number of moles needed
We need to know that;
Molarity = Number of moles ÷ Volume
Therefore;
Number of moles = Molarity × Volume
Hence;
Number of moles = 6.50 M × 12.0 L
= 78 moles
Thus, the moles of the solute needed is 78 moles
Answer:
The answer to your question is: letter B.
Explanation:
Carbon atom double-bonded to an oxygen atom C= O,
a) Carbohydrate group this group does not exist
b)Carbonyl group This option is right, carbonyl group is C=O
c) Hydroxyl group This option is incorrect, hydroxyl group is OH, very different from C=O
d) Ketone group Ketone group does not exist, ketones have the same functional group as aldehydes (C=O)
The amount of grams the student gained is 997.9 grams
<h3>Data obtained from the question</h3>
From the question given above, the following data were obtained:
- Mass (in lb) = 2.2 lb
- Mass (in grams) =?
<h3>How to convert 2.2 lb to grams</h3>
The mass gained in grams can be obtained by simply converting 2.2 lb to grams. This is illustrated below:
1 lb = 453.592 grams
Therefore,
2.2 lb = (2.2 lb × 453.592 grams) / 1 lb
2.2 lb = 997.9 grams
Thus, the number of grams the student gained is 997.9 grams
Learn more about conversion:
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