In which of the following cases is the vapor pressure of ethanol greatest? A. mole fraction of ethanol in water = 0.10

B. mole fraction of ethanol in water = 0.25

C. mole fraction of ethanol in water = 0.50

D. pure ethanol

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

At element makes up all organic compounds?