The concentration of an unknown weak acid solution is 0. 20m, and the solution has a ph of 3. 89. What is ka for this weak acid?.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

How many peaks will be present in a mass spectrum for brcl?