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Oksanka [162]
3 years ago
12

If you wanted to design an experiment to show that the solubility of sugar in tea varies according to the temperature, what vari

able would remain constant?
Chemistry
2 answers:
PIT_PIT [208]3 years ago
8 0
Its A) Volume of tea
Taya2010 [7]3 years ago
8 0

Answer:

A)  

Volume of tea

Explanation:

The volume of tea used must be the same in every experiment in order for the experiments to be considered valid.

- credit: https://www.usatestprep.com/

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Igoryamba

if we did not use an excess of the BaCl2 solution it would decrease the mass percentage of sulfate in the unknown sample.

The net precipitation equation would be.

Ba2+(aq) + SO42-(aq)  → BaSO4(s)

If BaCl2 (Ba2+) is not taken in excess then the precipitation would not be completed as some of the sulfate ions would still be remaining in the solution. This would decrease the mass percentage of sulfate in the unknown sample.

If some tiny pieces of filter paper still remained mixed with the precipitate(BaSO4) then the mass of sulfate would increase and it gives a high mass percentage of the sulfate.

mass percentage of sulfate = (mass of sulfate/mass of sample)*100

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Lack of moisture :)               

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Elements that are generally shiny when smooth and clean.
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If I initially have a gas at a pressure of 12 kPa, a volume of 23 liters, and a temperature of 200 K, and then I raise the press
sertanlavr [38]

Answer:

The new volume of gas would be 30 L.

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In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?
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