What accounts for the large density differences between the terrestrial and Jovian planets?
What will be an ideal response?
The composition of the planets (rocky vs. gaseous) accounts for their density differences. Metallic cores and silicate crusts are much denser than tiny rocky cores surrounded by enormous bodies composed mostly of hydrogen.
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Alpha and beta rays are deflected in opposite directions in a magnetic field because
A) they have opposite charges. B) they spin in opposite directions. C) alpha particles contain nucleons and beta particles do not. D) all of the above
Which part of the brain controls heartbeat and respiration?
A) the brainstem B) the cerebellum C) the cerebrum D) the thalamus
?An ecological footprint is the amount of biologically productive land and water required to supply a population in an area with renewable resources and recycling of wastes and pollution.
Answer the following statement true (T) or false (F)
Carboxylic acids do not form hydrogen bonds with which of the following classes of compounds?
A) alcohols B) ethers C) alkanes D) None, carboxylic acids form hydrogen bonds with all of these.