Question
A mixture of water and sucrose is 10% sucrose by weight. How many grams of pure sucrose must be added to a 200-gram sample of this mixture to produce a mixture that is 20% sucrose?
Answers
Your original 10%, 200 g mixture has 180 g of water and 20 g of sucrose. Let x be the number of grams of sucrose you need to add. The reqiuorement is
(20 + x)/180 + x) = 0.20
Solve for x
(20 + x)/180 + x) = 0.20
Solve for x
But, aren't we adding the x grams to the original 200 ?
so I would say:
20+x = .2(200+x)
for x = 25
so I would say:
20+x = .2(200+x)
for x = 25
Related Questions
The molar mass of sucrose, or table sugar, is 342 grams. Calculate how many grams of sucrose are re...
The hydrolysis of sucrose into glucose and fructose in acidic water has a rate constant of at 25 d...
a sucrose solution with a volume of B uL has a density of C g/ml. the solution is D % sucrose by ma...
Sucrose dissolves in water because __________.
a
both water and sucrose have high melting point...