Chloroform has a normal boiling point of 61.7°C. Which of the following is true?
A) At any temperature the vapor pressure of chloroform is less than that of water.
B) Chloroform is more volatile than water.
C) Both a and b are correct.
D) Neither a. nor b is correct.
B
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What aluminosilicate polymorph is stable at a pressure of 3.5 kilobars and a temperature of 550 degrees C?
A) andalusite B) sillimanite C) kyanite D) andalusite, sillimanite and kyanite
Match the lettered blanks to their location in the Geologic Time Scale in this image
A) Neogene B) Cambrian C) Mesozoic D) Holocene 1) A 2) B 3) C 4) D
________ is the study of controls over the distribution and abundance of living things
Fill in the blank(s) with correct word
In developing countries, pressure to increase agricultural productivity has resulted in
A) increased yields. B) more sustainable use of the land. C) conversion of forests into agricultural fields. D) reduced use of hybrid crops.