A 5.65 g sample of a weak acid with Ka = 1.3 x 10-4 was combined with 5.20 mL of 6.10 mol L-1 NaOH and the resulting solution was diluted to 750 mL.
The measured pH of the solution was 4.25. What is the molar mass of the weak acid​​

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

може ли да зареждате повече информация, моля

you need to have a picture of the atom that way we can answer it

c. electrical charges of ionic bonds.