Can you see live harbor seals in Washington DC?
The Smithsonian National Zoo is in Washington DC. There is a harbor seal exhibit at the Smithsonian National Zoo.
The answer is yes.

Could a chipmunk fit 100 chocolate chips in his mouth?
A chipmunk can fit up to two tbsp of food in his mouth. There are about 20-25 chocolate chips in a tbsp.
The answer is no.

Is J.D. Salinger's most successful work influential to killers?
J.D. Salinger's most popular work was Catcher in the Rye. John Hinckley Jr. tried to assassinate Ronald Reagan after reading Catcher in the Rye. Mark David Chapman had a copy of Catcher in the Rye when he assassinated John Lennon. Robert John Bardo carried a copy of Catcher in the Rye when he murdered actress Rebecca Schaeffer.
The answer is yes.

Does welding with acetylene simulate the temperature of a star?
Acetylene is used for oxyacetylene welding. An acetylene/oxygen flame burns at about 3,773 K. The star Betelgeuse has a surface temperature of 3,500 K.
The answer is yes.