What effect would powdering the solid have on the rate of dissolving the solid in a liquid?
Powdering the solid increases the rate of dissolving because it increases the surface
area of the solute in contact with the solvent.
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Accretion is
a. the adding of material to an object an atom or molecule at a time. b. the adding of material to an object by collection of solid particles. c. the release of gas from rocks as they are heated. d. the largest of the Galilean satellites. e. caused by the bombardment of the solar wind.
This photo shows gas associated with a protostar. What is this gas doing?
A) It is flowing outward in two opposite directions from the protostar. B) It is gas that is gradually accreting onto the protostar. C) It is part of a protostellar disk in which planets may someday form. D) It is gas blown off the protostar's surface as a protostellar wind.
If two nonzero vectors point in the same direction, their dot product must be zero
A) True B) False
The critical temperature below which superconductors conduct so superbly is affected by
1.chemical composition, pressure, and conductivity at normal temperatures. 2.chemical composition, molecular structure, and conductivity at normal temperatures. 3.chemical composition, pressure, and molecular structure. 4.pressure, molecular structure, and conductivity at normal temperatures.