Which of the following is the characteristic feature of all alkynes?
A) the presence of one or more carbon-carbon double bonds
B) the presence of one or more carbon-carbon triple bonds
C) the presence of at least one carbon-carbon double bond, and at least one carbon-carbon triple bond
D) the presence of a ring system
B
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Continental shields are areas of ____
a. organic sedimentary rocks b. pyroclastics c. basalt d. ancient igneous and metamorphic rocks
Oxygen, O, (number 8), sulfur, S, (number 16), and selenium, Se, (number 34) have such similar chemical properties because
A. they all have the same number of occupied shells. B. their outermost shells contain the same number of electrons. C. they are all located close to one another in the periodic table. D. These elements can't have similar chemical properties because they are in different periods of the periodic table.
Pieces of lithosphere with completely different fossil content, stratigraphy, structural trends, and paleomagnetic
properties than surrounding rocks are called ____. a. terraces b. concretions c. hot spots d. Wilson blocks e. terranes
Refer to the scenario above. Assuming a temperature of 20°C at the ground surface, what is the temperature at a depth of 2 miles?
Scenario: In the pursuit of scientific knowledge, you decide to bore a hole into the crust to see how the temperature changes. You start your borehole in Davenport, Iowa, where the geothermal gradient is 20°C/km. What will be an ideal response?