Depending on what information you're actually looking for....there are 16 oz. in a U.S. pound.
If the question is meant to be "How much does a pound of flour weight?" The answer is a pound.
pound is much heavy than ounce
a pound of what
a pound
A pound...
A pound.
A pound.
One pound.
A pound
A pound.
A pound.
20 pound's 20 pound's 20 pound's 20 pound's 20 pound's 20 pound's