Chemistry, 31.03.2020 01:28 rainbow7020
A sample of 8.4 grams of NaOH is dissolved into 620 mL of aqueous 0.250 M NaOH (assume no volume change). This solution is then poured into 1.65 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in the final solution
Answers: 2
620 ml of aqueous 0.25 M NaOH 
Total moles = 0.21 + 0.155 = 0.365 moles1.65 gallons = 3.785 lit x 1.65 = 6.245929 lit (∵ 1 gallon = 3.785 lit)
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A sample of 8.4 grams of NaOH is dissolved into 620 mL of aqueous 0.250 M NaOH (assume no volume cha...
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