How many moles of NH4NO3 are in 23.7 grams of NH NO3?
A. 1 mol NH4NO3
B. 0.296 mol NH4NO3
C. 1.9 x 103 mol NH4NO3
D. 3.38 mol NH4NO3

Enzymes affect the reactions in living cells by changing the

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.