Freelancing is not just a U.S. phenomenon, but is now spreading around the world. 1  There are approximatly 53 million freelancers in the U.S. contributing $715 billion in earnings to the national economy. 2  80% of all workers in the U.S. surveyed said they would do work on the side if it came to them to earn extra money.
pH value. A number denoting the degree of acidity or of basicity (alkalinity); 7 is a neutral value; acidity increases with decreasing values below 7; basicity increases with increasing values above 7.
Calculate the pH for a specific [H + ]. Calculate pH given [H + ] = 1.4 x 10 -5 M. pH = -log 10 [H + ]. pH = -log 10 (1.4 x 10 -5). pH = 4.85. Example: Calculate [H + ] from a known pH.