Give 3 examples of conduction, radiation, and convection.
2 answers:
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Answer:
Water
Explanation:
To solve this problem, we need to solve for the number of molecules of these compounds;
given:
Mass of water = 1.25g
Mass of C₂H₅OH = 0.89g
We first solve for the number of moles of these compounds;
Number of moles =
Molar mass of H₂O = (2x1) + 16 = 18g/mole
Molar mass of C₂H₅OH = (12 x 2) + (1 x 5) + 16 + 1 = 46g/mole
Number of moles of H₂O = = 0.07moles
Number of moles of C₂H₅OH = = 0.02moles
We see that number of moles of water is more than that of ethanol. Therefore it has more molecules because;
1 mole of substance = 6.02 x 10²³
0.02moles of ethanol = 1.2 x 10²²molecules of ethanol
0.07moles of water = 4.2 x 10²² molecules of water