Explain the rise and fall of the kingdom of Aksum
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Ответ:
Eventually, the rise 0f p0werful Islamic states in the 7th century spelled the end 0f the Kingd0m of Axum. Cut 0ff fr0m their main s0urce 0f wealth, Axum fell int0 decline. By the 10th century, invading kingd0ms and climate change f0rmally diss0lved the Kingd0m 0f Axum.
Explanation:
i g0t it fr0m g00gle, try and switch the w0rds s0 it isnt 0bvi0us l0l but if it isn't c0rrect lmk and ill make a questi0n s0 y0u can get fr33 p01nts-
Ответ:
Answer
Rise: The kingdom of D'mt populated the majority of the Northern horn which had developed much agriculture and expansion of trade with other empires like Egypt. After the fall of the D'mt kingdom many small kingdoms took its place and slowly came together as one large kingdom called, Aksum. Aksum rose to power in the first century after the son of a Solomon queen had expanded to the land near the red sea.
Fall: The empire had become isolated from civilizations when it came to trade after battling Arabian armies. Their religion segregated them and caused the downfall of their power over the trading ports on the Red Sea.
For more information, go here: https://storymaps.arcgis.com/stories/9b7b377398724be99a0d94dfa9f55550
Ответ:
3.74g of ethylene glycol must be added to decrease the freezing point by 0.400°C
Explanation:
One colligative property is the freezing point depression due the addition of a solute. The equation is:
ΔT=Kf*m*i
Where ΔT is change in temperature = 0.400°C
Kf is freezing point constant of the solvent = 1.86°C/m
m is molality of the solution (Moles of solute / kg of solvent)
And i is Van't Hoff constant (1 for a nonelectrolyte)
Replacing:
0.400°C =1.86°C/m*m*1
0.400°C / 1.86°C/m*1 = 0.215m
As mass of solvent is 280.0g = 0.2800kg, the moles of the solute are:
0.2800kg * (0.215moles / 1kg) = 0.0602 moles of solute must be added.
The mass of ethylene glycol must be added is:
0.0602 moles * (62.10g / mol) =
3.74g of ethylene glycol must be added to decrease the freezing point by 0.400°C