1. An Aqueous Solution of Ethanol, C3H5OH, is 19% ethanol by mass and has a density of .9700 g ML. Calculate the molarity of the ethanol solution.
2. When a solute such as ammonium sulfate is dissolved ina solvent like water, one of the the observed effects is:
a. a decrease in vapor pressure of the solvent
b.an increase in VP of the solute
c. an increase in the melting point fo the liquid
d. a decrease in the boiling point
e. scattering of light beams by the solute particles in the soln.
3. Concerning the process/ seperation of a solid sub. into its component units where the interparticle distances are large compared to the particle sizes,
is it exothermic or endothermic and does the potential energy increase, decrease, or stay the same?
2007-05-28 07:50:52 · 1 answers · asked by julie b 1 in Science & Mathematics ➔ Chemistry
1. multiply 970 g by 0.19 to get grams of ethanol
divide result by 62 g/g-mole to get moles of ethanol. Result is molarity (about 4)
2. a
3. idk (got lost after component)
2007-05-28 08:08:56 · answer #1 · answered by cattbarf 7 · 0⤊ 0⤋