How do photoynthesis and cellular respiration work together to make ecosystems function?

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Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ

Calculate the ph of a .10m nh4cl solution. the kb value for nh3 is 1.8×10^-5