Answer:
Energy required is 4.147 kj.
Explanation:
Given data:
Mass of ice = 12.4 g
Temperature = 0°C
Molar heat fusion for ice = 6.02 kj/mol
Energy required to melt = ?
Solution:
Formula:
q = n ×ΔH
q = heat
n = number of moles
ΔH = enthalpy
First of all we will calculate the number of moles.
Number of moles = mass/ molar mass
Number of moles = 12.4 g/ 18 g/mol
Number of moles = 0.69 mol
Now we will put the values in formula.
q = n × ΔH
q = 0.69 mol × 6.02 kj/mol
q = 4.147 kj
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When those atoms are given energy, the electrons absorb the energy and move to a higher energy level. ... These energy levels of the electrons in atoms are quantized, meaning again that the electron must move from one energy level to another in discrete steps rather than continuously.
The answer should be different. Acids must be in water to ionize.
Shade only feels cooler because you are avoiding solar radiation. In reality, the temperature in the sun is the same as the temperature in the shade. ... When in the shade, your skin is not being “heated” by the sun's rays, so your skin and your body feel a more comfortable temperature.