Answer:
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Step-by-step explanation:
formula: gram of solute/gram of solution X 100
so 150/400 X 100 is <u>3</u><u>7</u><u>.</u><u>5</u><u>%</u><u> </u><u>of</u><u> </u><u>KNO3</u>
(2×12×200.50)÷(2,500×25) *100=7.7%