Answer: 5040 joules
Explanation:
How much energy is released when 150g of silver cools from 220°C to 80°C?
Given the following :
Mass (m) of silver = 150g
Change in temperature (ΔT) = (220 - 80)°C = 140°C
Q=mcΔT
Where Q = quantity of heat
m = mass of silver ; c = specific heat capacity
Specific heat capacity of silver = 0.240 j/g°C
Q = (150 * 0.240 * 140)
Q = 5040J
Answer:
B. Elect their government officials.
Explanation:
A republican form of government is one where the people are involved in electing their government officials who became their representatives in governing the nation. The citizens are responsible for choosing who their leaders are, and through that, the government's power comes from them.
This form of government was used in Rome where the citizens were allowed to elect their government officials. These elected officials rule on the people's behalf and become the 'voice' for the people.
Thus, the correct answer is option B.
The gobi desert sits on a sand dune atop a high plateau
<span>Radiometric dating such as carbon 14, Uranium 238, 235, and 234, Thorium 232, Rubidium 87, and Potassium 40. This is not an exhaustive list. Each of these different isotopes have a different half life, so they can be used to measure different ages, from million to billions of years.</span>
