A student has dropped some copper sulphate crystals into some sand. She needs to get the copper sulphate out to use in an experiment. Copper sulphate is soluble in water. Describe, using steps she could follow, how she could to this. You should also include an explanation of why the processes you suggest will work. Can someone please send me the answer in less than an hour I would be so grateful.

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the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.