What is the net charge of an ion that has 8 protons, 9 neutrons, and 10 electrons

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer