In a solution of KBr and water; KBr is the solute and water is the solvent;
Therefore; to achieve 3% by mass; it means we are going to have 3% of the mass being the solute and the other 97 % being the solvent.
Thus; KBr (solute) = 3/100 × 300 (total mass) = 9 g
Hence; the appropriate masses will be; 9.00 g of KBr and 291 g of water.
Yes because some work harder than others to get their credit for developing the periodic table
The last answer
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Answer:
Protons are a type of subatomic particle with a positive charge
Neutrons are a type of subatomic particle with no charge (they're neutral).
