maxstmichel3868
28.06.2019 •
Mathematics
Achemist needs a solution of tannic acid 70% pure. how much distilled water must he add to 5 gallons of acid which was 90% pure to obtain the 70% solution?
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Ответ:
Ответ:
1.4286 gallons
Step-by-step explanation: the equation would be:
0.9*5+0x=0.7(5+x)
then you can shorten it down to:
4.5=3.5+0.7x
subtract both sides by 3.5 and you end up with:
1=0.7x
divide both sides by 0.7 and you get 1.4286 gallons
Ответ:
7,560
Step-by-step explanation: