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a chemist has 400 mililiters (mL) of solution that is 21% acid. How many mililiers of acid are in the solution

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  1. 400 X .21= ML OF SOLUTION

    WHEN WORKING WITH % YOU PUT A DECIMAL IN FRONT OF THE NUMBER
    MULTIPLY THE # BY .01 AND YOU GET THE %
    EXAMPLE
    21%= 21*.01= .21
    8%= 8*.01=.08
    100%=100*.01= 1.0
    HOPE THAT HELPS

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