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erma4kov [3.2K]
3 years ago
6

The formula mass of a molecule or ion is

Chemistry
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

For an element, the molar mass is the mass of 1 mol of atoms of that element; for a covalent molecular compound, it is the mass of 1 mol of molecules of that compound; for an ionic compound, it is the mass of 1 mol of formula units.

Explanation:

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The concentration of a diluted "wine" sample was found to be 0.24 %(v/v) ethanol. Assuming the wine was diluted by 75x before an
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Answer:

The original concentration of ethanol was 18 % (v/v)

Explanation:

For the analysis of a sample, mostly dilutions are made of the original concentrated sample. The analysis results obtained from the diluted sample are then calculated for the concentrated samples.

According to the given data, the wine sample was diluted 75 times. This means that the initial concentration of ethanol was 75 times more than the final concentration i.e. 0.24 % (v/v). So mathematically:

original concentration (v/v)= final concentration (v/v) x times diluted

original concentration (v/v)= 0.24 % x 75

original concentration (v/v) = 18 %

3 0
3 years ago
Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooke
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Answer:

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3 years ago
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How can you make a solution saturated?
liubo4ka [24]
You can make a solution saturated by Adding more solute. Hope this helps, good luck. 
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Alborosie

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c

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A sugar cube was placed into a beaker containing 100 mL of water at room temperature and completely dissolved into the water. Th
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