The ideal gas constant, r has several different values that could be used. which quantity causes these differences?
a. pressure
b. temperature
c. volume
d. moles

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?