Yes. The logarithm of 1 is zero; the logarithm of any number less than one is negative. For example, in base 10, log(0.1) = -1, log(0.01) = -2, log(0.001) = -3, etc.
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Of course it is. 'a' can be any positive or negative number, and 'b' is its square.That's no problem.What is difficult is for 'b' to be a negative number in the same equation.No real number for 'a' can produce a negative 'b'.
The number is called e, and it is approximately equal to 2.718.
The negative logarithm of the molar concentration of hydronium (H3O+) ions. pH=-log[H3O+]
negative.
A negative number.