On the left is a drawing of what scientist Thomas Young demonstrated in the early nineteenth century when he conducted an experi
ment in which he allowed sunlight to pass through two tiny slits in an aperture (labeled "A" and "B").
Young saw a distinct interference pattern, similar to the one shown on the right, in which light waves added together at some points (making them brighter) and canceled each other out at other points (resulting in dark spots).
What would Young have seen if light did not exhibit any wave characteristics?
A. The light would have only interfered constructively.
B. The light would have only interfered destructively.
C. No light would have made it through the aperture.
D. The light would have appeared as two separate beams.
Young saw a distinct interference pattern, similar to the one shown on the right, in which light waves added together at some points (making them brighter) and canceled each other out at other points (resulting in dark spots).
What would Young have seen if light did not exhibit any wave characteristics?
A. The light would have only interfered constructively.
B. The light would have only interfered destructively.
C. No light would have made it through the aperture.
D. The light would have appeared as two separate beams.
1 answer:
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Answer:
and
. The missing ion would be
.
Explanation:
In a double replacement reaction, two ionic compounds exchange their ions to produce two different ionic compounds.
In this question, the two ionic compounds are:
, and
.
In particular,
ions and
ions, while
ions and
ions.
In a binary ionic compound, cations (positive ions) can only bond to anions (negative ions.)
.
.
Hence, the two products will be and
.
Note that charges on the ions must balance. For example, a ion carries twice as much charge as an
ion. As a result, each
ion would bond with twice as many
ions as
would in
.