Which of the following is NOT a clue that could indicate a chemical change? A. change in color
B. mixing reactants
C. change in energy
D. release of gas
E. formation of precipitate​

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

The answer is nitrogen-containing bases

Your awser would be a acetone