Answer:
ΔH = 41.7 kj
Given data:
Mass of ethanol = 50 g
Heat required to vaporize = ?
Boiling point of ethanol = 78.3°C
Molar heat of vaporization = 38.6 kj/mol
Solution:
First of all we will calculate the number of moles.
Number of moles = mass / molar mass
Number of moles = 50 g/ 46.07 g/mol
Number of moles = 1.08 mol
ΔH = 38.6 kj/mol ×1.08 mol
ΔH = 41.7 kj
Explanation:
Answer: Electric charges are of two general types: positive and negative.
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Answer:
She okeyy
Explanation:
Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️
Answer:
the ice age is I think 8 then happened to the massive amount of plant is 10 and thice time is ice fully glow because it is cold.
Answer:
B. pipette
Explanation:
A pipette can barely measure anything, they mostly don't have numbers on them and only squeeze out a few drops. Other materials, graduated cylinder and (buret) burette, have measuring lines on them. They can hold much more amount of liquid. This makes a pipette the least precise way to measure a liquid.
