Para poder simular la reacción que ocurre en una bolsa de aire, en el laboratorio se produjo nitrógeno mediante la reacción de amoniaco con el oxido de cobre . La ecuación química es la siguiente. NH3+CuO-->Cu+H2O+N2
a)Si reaccionan 80 g de NH3 con 160 g de CuO, determina el reactivo limitante y el de exceso
b)Determina la masa de N2, producida mediante la reacción
c) Calcula el rendimiento si se obtienen 17 g de N2

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.

Wind and moving water provide energy. chemical mechanical thermal none of the above

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions