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I need helping on how to solve these 2 Chemistry problems!?
A solution of sugar in water has a density of 1.05 g/cm3 . If you have 75 mL of the solution, and if the solution is 5.1% sugar, how many grams of sugar are there in the solution?
I can't figure out what steps to begin with. I start solving them and then get the wrong answer. I think I'm approaching them the wrong way. What formula or conversions would I use?
Tin foil is 92.0% tin and 5.0% zinc. If you have 0.500 pounds of tin foil, how many grams of tin do you have?
A solution of sugar in water has a density of 1.05 g/cm3 . If you have 75 mL of the solution, and if the solution is 5.1% sugar, how many grams of sugar are there in the solution?
a. 63.8 g sugar
b. 6.4 g sugar
c. 60.8 g sugar
d. 6.1 g sugar
He answered the 2nd one right, but the first is still not...
1 Answer
- 1 decade agoFavorite Answer
for the first one:
since you have 75mL of the solution which is only 5.1% sugar, just multiply these to numbers and they should equal how much sugar in mL is in the solution. then just use the density to find its amount in grams. 1mL = 1cm3, so just multiply those two numbers and it should give you the grams. ----basically multiply the 3 numbers together ^_^
for the next one:
convert 0.5 pounds to grams, then multiply that by 0.92.
