The vapour pressure of 2-propanol is 45.00 kPa at 330.5°C, but it fell to 28.22 kPa when 7.69 g of an involatile organic compound was dissolved in 250 g of 2-propanol. Calculate the molar mass of the compound.
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Answer:
equation for molar mass is
no. of moles= given mass / molar mass
i.e.
molar mass= no. of moles / given mass
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