Two acid solutions are to be mixed togethersolution A is 30% acid by volumesolution B is 70% acid by volumeHow much of solution A is needed to mix with solution B to make an 800 mL mixture that is 54% acid by volume?Answer to the nearest millilitre.

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Two acid solutions are to be mixed togethersolution A is 30% acid by volumesolution B is 70% acid by volumeHow much of solution A is needed to mix with solution B to make an 800 mL mixture that is 54% acid by volume?Answer to the nearest millilitre.

Two acid solutions are to be mixed togethersolution A is 30% acid by volumesolution B is 70% acid by volumeHow much of solution A is needed to mix with solution B to make an 800 mL mixture that is 54% acid by volume?Answer to the nearest millilitre.
Two acid solutions are to be mixed together
solution A is 30% acid by volume
solution B is 70% acid by volume
How much of solution A is needed to mix with solution B to make an 800 mL mixture that is 54% acid by volume?Answer to the nearest millilitre.
急

Two acid solutions are to be mixed togethersolution A is 30% acid by volumesolution B is 70% acid by volumeHow much of solution A is needed to mix with solution B to make an 800 mL mixture that is 54% acid by volume?Answer to the nearest millilitre.
两种酸性溶液混合在一起
A溶液中酸的体积浓度是30%
B溶液中酸的体积浓度是70%
问:如果要配置酸体积浓度是54%的溶液800毫升,需要A和B各多少?单位用毫升.
(A*0.3+B*0.7)/800 = 0.54
A+B=800
0.4A=128
A=420ml,则B=800-420=380ml

两个酸溶液是混合在一起，溶液A是30%的酸量，溶液B是70%的酸量。溶液A需要混合多少溶液B才能做出800毫升54%酸度的硫酸混合物呢?回答到最近的毫升数值。

两个酸溶液是混合在一起
解决方案A是30%的酸量
解决方案B是70%的酸量
解决方案A是多少需要混合解决方案B做出800毫升硫酸混合物,54%容量呢?回答到最近的毫升。

白两种酸混合在一起。A酸百分之30，B百分之70体积，那么，如何解决一个需要混合溶液乙做800毫升的混合物，是54%的体积？求最接近的毫升

准备将两种酸溶液混合在一起，溶液A浓度是30%，溶液B浓度是70%，要想配制浓度为54%800ml的溶液，需要多少溶液A和溶液B？
假设需要xml溶液A，yml溶液B，则
x+y=800
30%x+70%y=54%×800
求得：x=480
y=320

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