Question

A student adds 635 grams of sugar to 200 grams of water then heats the sample to 90 degrees celsius to make sure all of the sugar dissolves. The student then cools the sample to 20 degrees celsius. How many grams of sugar are soluble in 200 grams of water at 20 degrees celsius?

Answer 1

Answer:

310 gram

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Answer 2

Answer:

Logarithm of 125 to base 55 is

log55125=log5553=log52353=3.32=2

Logarithm of .25 to base 4 is 

log40.25=log220.52=21.log20.52=21.log22−2=21(−2)=−1