Explain the boiling points and freezing points
Calculate the boiling points and freezing points of a 1.17m solution of naphthalene in the benzene? Where the freezing point of benzene is 5.5 and the boiling point of benzene is 80.1
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Determine the numbers of grams of water were driven off? Determine the numbers of moles of water were driven off? Determine the numbers of percent mass of water in the hydrate?
In the first trial the procedure, The ratio of moles H20/moles CaSO4 is found to be 1,93 and in the second trial the ratio was found to be 1,98. Determine the relative average deviation of the two trials.
A 0.10mol/l solution of propanoic acid (CH3CH2COOH) is pH 2.96. Determine the percent dissociation and the Ka (Acid dissociation Constant) for this acid.
Hexane and pentane form an ideal solution. The vapor pressures of pure hexane and pentane are 145 torr and 511 torr, respectively. A solution is prepared by mixing the 1.00 moles of hexane with 2.00 moles of pentane.
The following Data was gathered to find out whether or not Nassau Community College Students work 18 hours per week :
Discuss the trend in the electron affinities and ionization enthalpies across the third short period (Na through Ar). Discuss in detail.
In order to determine the proportion of of customers using self-service pumps, a gas station wants to find the number of customers she must survey so her margin of error is no more than 8% and her confidence level is 90%.
Calculate the screening constants and the effective nuclear charges for: Explain how do these values are relate to each other?
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