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The correct answer is "Some substances must be dissolved in water before they can be used".
The formula that is applicable here is E = kQ/r^2 in which the energy of attraction is proportional to the charges and inversely proportional to the square of the distance. In this case,
kQ1/(r1)^2 = kQ2/(r2)^2 r1=l/3, r2=2l/3solve Q1/Q2
kQ1/(l/3)^2 = kQ2/(2l/3)^2 kQ1/(l^2/9) = kQ2/(4l^2/9)Q1/Q2 = 1/4
Answer:
the answer is b because it does not show evidence
Answer:
lipids are insoluble in water which is why lipids are often found in biological membranes and other waterproof coverings.
