Which of the following gives the name for the bluish halo that may appear above pointed objects underneath a thunderstorm?
A. heat lightning
B. St. Elmo's fire
C. sheet lightning
D. fluorescence
Answer: B
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Land values are high in the CBD primarily because of
A) competition for limited space. B) high threshold and range. C) less intensive land use. D) construction of skyscrapers.
Despite a multitude of names given to describe portions of the ocean, it is more accurate to call it a single dynamic world ocean
Indicate whether the statement is true or false
If current energy consumption trends continue and the per capita income of the world increased dramatically, we would expect that
A) global climate change will be a greater problem. B) literacy levels will decrease. C) respiratory diseases in cities will increase. D) land and labor will no longer be economic factors.
Hydrocyanic acid, HCN, is a weak acid. Which of the following is the correct expression for the Ka of hydrocyanic acid?
A) [H3O+][HCN]/[CN-] B) [H3O+][CN-]/[HCN] C) [HCN]/[ H3O+][CN-] D) [HCN][CN-]/[ H3O+]