13. The fuel tank of an airplane has a device that measures the fuel's temperature. Before the airplane took off, the temperature of the fuel was 27°C. After the airplane had been flying for one hour, the
temperature of the fuel had decreased to 3°C. Which of the following must have happened to the
molecules of the fuel?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

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

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?