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A 20.00 mL sample of H3PO4 is titrated to a phenolphthalein end point with 18.67 mL of NaOH. If the phenolphthalein color change occurs at the second eqivalence point, whats the molarity of the acid? (please show the work so I can learn it)
A 0.542 g sample of an unknown monoprotic weak acid requires 28.67 mL of 0.1093 M NaOH for neutralization. What is the molar mass of the acid?
When I did it I got 173 g/mol, but Im uncertain.
What is the pH at the equivalence point of a titration of 0.20 M formic acid with 0.20 M NaOH? 11) (Ka for formic acid = 1.8 x 10-4) I'm not sure how to get this without the mL.
if a sample of cuso4 ofnbsp 2.25 grams are dissolve in 9.3 102 ml of 0.35 m ammonia then determine what are the
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A 275-g sample of nickel at 100.0C is placed in 100.0 mL of water at 22.0C. What is the final temperature of the water.
KCL has the same structure as NaCl, the length of the unit cell 638 pm the denstiy of KCl is 1.984 g/cm3 and its formula mass is 74.55 amu. what is avogadro's number?
A 0.4168-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.7745 g of CO2 and 0.1586 g of H2O. What is the empirical formula of the compound?
the reaction between lithium metal and chlorine gas is described by the following thermochemical equationlis
Why when Shutting Down Scanning Electron Microscope do you Turn the magnification to its maximum
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