Answer:
Explanation:
A catalyst is a substance that increases the rate of a chemical reaction without itself getting consumed in the reaction as it helps in decreasing the activation energy. Thus, rate of reaction also increases.
A positive catalyst helps in increasing the rate of a chemical reaction whereas a negative catalyst decreases the rate of a chemical reaction.
Whereas when we increase the temperature then collisions between the particles increases due to increase in kinetic energy. Hence, rate of reaction increases with increase in temperature.
Thus, we can conclude that out of the given options adding a positive catalyst will increase the rate of a chemical reaction.
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Answer:
The correct answer is option c. music by black musicians
.
Explanation:
These lines refer to the poem <em>"A Poem for My Librarian, Mrs. Long".
</em>
In this poem the life of a black girl living in the United States is narrated.
Among the things she tells of her life, she stands out as she and her family listened to the radio, and that's where the lines come in:
<em>"And sometimes sarah vaughan sing black coffee
</em>
<em>Which I now drink "
</em>
These lines mean music by black musicians. She and her family listened not only to Sarah Vaugahn, but also to Matt Dennis, June Christy, Nat King Cole and Ella Fitzgerald among others.
Given this information we can say that the correct answer is option C.
Answer:
Option b. the value of honesty
Explanation:
A theme in literature is a lesson learned, or a moral that develops throughout the story. Seeing as a character could learn the value of honesty, while they could not in fact learn any of the other option choices, makes option b. the best pick!
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