The correct answer is B) the yellow fever outbreak.
The cause of the jump in prices was the yellow fever outbreak.
We are talking about 1793 in the city of Philadelphia, Pennsylvania. This was a virus that provoked pain in joints and muscles, as well as fever. Then the virus affected the liver and the kidneys of the patient. Mosquitos were the transmissions of yellow fever. Refugees from the Philipines landed in Philadelphia and that is why they spread the virus in that region of the United States. This virus caused prices to go higher, affecting the economy of the region.
Answer:
A. Bubbles formed
Explanation:
When a student added a piece of limestone to a solution of hydrochloric acid, bubbles are formed.
The bubbles are as a result of the CO2 gas that is formed.
Below is the reaction:
CaCO3+2HCl → CO2+H2O + Ca++ + 2Cl-
From the left hand side, we can see that the reaction is with limestone and hydrochloric acid. Their reaction forms carbon dioxide gas (CO2), water (H2O), dissolved calcium (Ca++) and dissolved chlorine (Cl-) on the right hand side.
With due observation, bubbles will be seen evolving from the reaction. These bubbles formed is the carbon dioxide gas which reveals that a reaction is taking place.
"They provide a framework that enables wider engagement in the whole political process. Through these political parties, anyone who is an American citizen is able to run for office, and anyone can vote and express their preference for any one party."
