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Question- A standard solution of 86% (w/w) H3PO4 (specific density = 1.71 g/mL) is to be diluted to get a1200 mL H3PO4 solution at 4.00 M.
How many mL of the standard H3PO4 solution are required?
I am in insistent need of solution of above problem with comprehensive explanation
What mass of this substance must evaporate in order to freeze 160 g of water initially at 19 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c. K}.)
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Why is the temperature 60 instead of 328K?
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