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["염산수 비율",,"통 안에 3.64m의 1.1%의 염산수가 있습니다. 현재 7%로 맞추려면 31%의 징염수를 몇 Much 더해야 합니까?","3.6m의體量是多少?看来质量守恒定律都忘的差不多了","质量守恒算一下就好了。 这种水平,还是不要在化工行业混了,早点转行吧;P","M mol V = M' mol V'를 잘 활용해 보세요. 가정 31%의 징염산수가 1.3* 1; = 0.07*X이고 X = 4;85ml이면 4;85 - -111盐酸未稀释前的体积量) 0.07*4;85 = 0.09*X이고 X = 1;5786 - - - 14786ml( 5.99的盐酸未稀释前的体积量) �然后计算3.6m中含有的 t.9%的盐酸体积 直接用比率计算就知道需要多少3.85的盐酸了。 以上的意见仅供参考"

2018-08-19View Original

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罐子里面有3.64米的百分之1.9的盐酸,现在要配成百分之7,需要加百分之30的浓盐酸多少
Reply #22018-08-19
3.6米的体积是多少?看来质量守恒定律都忘的差不多了
Reply #32018-08-20
质量守恒算一下就是了。 这种水平,还是不要在化工行业混了,早点转行吧;P
Reply #42018-08-20
請善用M1V1=M2V2 假設30%鹽酸體積為1000ML,0.3*1000=0.07X1 X1=4285ML→4285-1000=3285(7%鹽酸未稀釋前的體積量) 0.07*4285=0.019X2 X2=15786 15786-1000=14786ML(1.9%鹽酸未稀釋前的體積量) 在去計算3.6M內含的1.9%的鹽酸體積 直接用比率去計算就知道要多少30%鹽酸了。 以上意見提供參考

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