How much pure water must be mixed with 9 pints of 70% developer to produce the mixture he needs?
Posted by printer - 03/02/10 at 09:02:53 am
NancyFrances asked:
Nick DiGregorio is developing film in his darkroom when he realizes he does not have the proper developer. He needs a mixture that is 20% developer, but he only has a mixture that is 70% developer. How much pure water must be mixed with 9 pints of 70% developer to produce the mixture he needs? Round your answer to the nearest hundredth when necessary.
Nick DiGregorio is developing film in his darkroom when he realizes he does not have the proper developer. He needs a mixture that is 20% developer, but he only has a mixture that is 70% developer. How much pure water must be mixed with 9 pints of 70% developer to produce the mixture he needs? Round your answer to the nearest hundredth when necessary.
February 3, 2010 | In Chemistry | No Comments
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