What are four ways you can tell a chemical change has occurred?

Ineed the answer asap pl 22. give an example of how oscar wilde uses irony to achieve social commentary in the play. you can discuss the irony of the title. respond in complete sentences.

Which of the following best describes the central idea of the article? a the tuskegee airmen started the civil rights movement by proving that black pilots are more skilled than white pilots. b the tuskegee airmen proved that black and white pilots had the same potential, which break racial barriers. c despite breaking racial barriers, the tuskegee airmen faced racial discrimination and were never recognized for their military success. d black pilots in the military had to work twice as hard as white pilots, and due to a lack of funds they were underprepared.

The tone of a story is the author's attitude toward the subject. provide two examples that support the conclusion that the tone of this story is ironic.