<span>∆T = i * Kf * m
Kf(cryoscopic constant of water) = -1.858°C·kg/mol
i = 1 (for glycerin)
m = molality of solute(glycerin) = nos of moles of glycerin / mass of solvent(water)[n/M]
n = 30.7g/92.09g = 0.33337moles
M is deduced from the density of water which is 1Kg/1000ml(1Kg/L)
M = 376ml * (1Kg/1000ml) = 0.376Kg
m is thus; 0.33337moles/0.376Kg = 0.8866mol/Kg
=> ∆T = 0.8866mol/Kg * 1 * -1.858°C·kg/mol
∆T = -1.647°C
~ -1.65°C.</span>
The greenhouse effect is related to the increase in the average surface temperature which is considered "global warming". Global warming is the result of an increase in gases like methane, carbon dioxide, and other factors that lead to a rise in the planet's temperature.
Answer: need to compete for scarce water
Explanation:
Arid means a landscape where there is little water. Therefore if you had a farm in a arid region it would be important to compete for scarce water.
Hope this helps!!!
China had:silk, porcelain, and paper
China needed:cotton, horses, and glass
