A solution is prepared by dissolving 53.5 grams of ammonium chloride, NH4Cl in 4000. grams of water? What is the freezing point of this solution? [The freezing point depression constant for water is 1.86°C/mole solute in 1000g of water]
A) -0.37°C
B) -0.47°C
C) -0.93°C
D) -1.86°C
C
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Humans can extend the earth's carrying capacity for the species. Can the earth adequately support an exponentially growing human population?
What will be an ideal response?
What is a functional group?
A. a group of hydrocarbons that can be used to make new materials B. a set of atoms bonded together that give molecules containing them similar properties C. a set of molecules that are grouped together to form a functional material D. a group that adds function E. none of the above
____________________ ____________________ ____________________ are alternating layers of chert and iron
oxide minerals that formed in shallow marine environments 2.3-2.5 bya. Fill in the blank(s) with the appropriate word(s).
What type of stream pattern would you expect to develop in a stream that had a low bedload to suspended load ratio, a higher percentage of finer grained sediment, stable banks, constant discharge and a low channel slope?
A) highly meandering pattern B) moderately meandering pattern C) mixed meandering and braided pattern D) moderately braided pattern E) highly braided pattern