Which of the Following Is Not a Good Reason Why

question 51

Multiple Choice

Which of the following is not a good reason why white- dwarf supernovae are good standard candles for distance measurements?

• A)White- dwarf supernovae are so bright that they can be detected even in very distant galaxies.
• B)White- dwarf supernovae occur only among young and extremely bright stars.
• C)White- dwarf supernovae are common enough that we detect several every year.
• D)All white- dwarf supernovae have similar light curves, which makes them easy to distinguish from massive- star supernovae.
• E)All white- dwarf supernovae involve the explosion of stars of nearly the same mass.

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Definitions:

ΔS°

The standard entropy change for a process, representing the change in entropy under standard conditions.

Rate Law

An equation that relates the rate of a chemical reaction to the concentration of its reactants, often in the form rate = k[A]^x[B]^y, where k is the rate constant.

Chlorination

A chemical process that introduces chlorine atoms into a molecule.

Acetone

A volatile, colorless liquid used as a solvent and an antiseptic; it's the simplest and most important of the ketones.