Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).
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in 9.59b, the dissolution of CaF2 I'm water is: CaF2(s)---->CaF2(aq) technically this is increasing the disorder of the system and should have a positive entropy (positive delta S), but the solutions manual shows it to have a negative entropy. Why is that?
The course reader uses "mantissa" when explaining sig figs for logarithm problems. This term refers to the digits after the decimal point, so since 10^2.18 has 2 sig figs after the decimal point, there will be 2 sig figs in the final decimal answer written in scientific notation, 1.5x10^2.
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