The two simplest sequences to work with are arithmetic and geometric sequences. An arithmetic sequence goes from one term to the next by always adding (or subtracting) the same value. For instance, 2, 5, 8, 11, 14,... is arithmetic, because each step adds three; and 7, 3, â1, â5,... is arithmetic, because each step subtracts 4.
Report Abuse. Yes pH is temperature dependent. So if you have water with a pH of 6.9 (very mildly acidic) at 12 C, and raise the temp up to about 22 C, the pH will reduce to about 6.7, which is more acidic. Jason, only pure water is neutral... most water you come across on a daily basis is not pure and doesn't have a pH of 7. derekbradley4000 Â· 8 years ago.
PH [Power of Hydrogen] is a measure of how acidic or basic your water is. It is measured in a logarithmic scale with 0.0 being the most acidic, 14.0 being the most basic and 7.0 being the neutral point. Most tropical fish thrive at a pH level closest to their natural environment.For instance, Discus survive best in acidic water with a pH around 6.5 while African Cichlids prefer much more basic water with a pH of about 8.5.t is measured in a logarithmic scale with 0.0 being the most acidic, 14.0 being the most basic and 7.0 being the neutral point. Most tropical fish thrive at a pH level closest to their natural environment.