Help with Textbook problem G.7

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Ellen Amico 2L
Posts: 101
Joined: Thu Sep 19, 2019 12:16 am

Help with Textbook problem G.7

Postby Ellen Amico 2L » Thu Oct 31, 2019 1:20 pm

Not sure why I'm having trouble with this but I need some help on 7 from the textbook:
You need to prepare 510. g of an aqueous solution containing 5.45% KNO3 by mass. Describe how you would prepare the solution and what mass of each component you would use.

Daria Azizad 1K
Posts: 116
Joined: Thu Jul 25, 2019 12:15 am

Re: Help with Textbook problem G.7

Postby Daria Azizad 1K » Thu Oct 31, 2019 2:16 pm

Multiply the percent of KNO3 by the total mass of the solution:

510 x 0.0545 = 27.8 g KNO3

Since the components of the solution are KNO3 and water, the remaining mass will be that of water.

510-27.8= 482.2g H2O

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