The standard entropy of vaporization of acetone is 85.0 J/(K mol) at its normal boiling point of 56.2 oC. What is the standard enthalpy of vaporization (in kJ) of acetone at this temperature

Evaluate this exponential expression,8. (2 + 3)2 – 42

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

How many moles of al3+ ions are in 1.25 moles of al2o3