Nonnative species thrive in new ecosystems because they have long generation times.
Answer the following statement true (T) or false (F)
False
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If you remove two protons and two electrons from a sulfur atom (S), what new element is formed?
A. Si+2 B. Ar-2 C. Al D. Si E. Al+2
Account for the observation that ethyl alcohol, C2H5OH, dissolves readily in water but dimethyl ether, CH3OCH3, which has the same number and kinds of atoms, does not.
A. The high electronegativity of the carbon-oxygen-carbon bond on dimethyl ether creates a strong dipole charge on the ends of the molecule, making it highly soluble in water. B. Because dimethyl ether lacks an -OH group, it is significantly less polar than is ethyl alcohol and is not readily soluble in water. C. Because the carbons arrange themselves in a straight line, the ethanol can interact more easily with more water molecules, thus increasing its solubility. D. The hydrogens on the dimethyl ether surround the molecule, shielding the inner atoms from interacting with the water.
A black hole is
A. the remains of a giant collapsed star. B. an empty region of space with a huge gravitational field. C. a small region that has the mass of many galaxies.
The resonant oscillation of seismic waves can be enhanced by tides on a smaller scale Indicate whether the statement is true or false