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Calculate total number of optical isomers in the following compound CH3(CHOH)3CH3 ??

How do you solve the inequality #2 x 5 > 32#?

How to differentiate with respect to 'x'
y=cos^(1){2x √(1x^(2))} ?

A chemist did an experiment and mixed baking soda with vinegar. She collected CO2 in a balloon. But there was also water vapor in the balloon. If the total pressure of the gas collected was 2.76 atm and the temperature was 290C, what was pressure of CO2?