In the lab, you are given a metal ball. You measure the mass of the ball to be 28 g. You place the ball in a graduated cylinder
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28%
Explanation:
mass of solute(KBr) = 3.73g
mass of solvent(H2O) = 131g
mass of solution = mass of solute + mass of solvent
= 3.73 + 131
= 134.73g
If 1mol ------- is ----------- 6,02×10²³
so x ------- is ----------- 1,39×10²⁴
so x ------- is ----------- 1,39×10²⁴