Which of the following is correct? The principal quantum number, n, describes the shape of an atomic orbital.
No more than two electrons in an atom can have the same principal quantum number (n).
The magnetic quantum number, ml, is related to the orientation in space of an orbital within a given subshell.

Select one:
a. 1 only
b. 2 only
c. 3 only
d. 1, 2, and 3
e. Not enough information

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Answer asap need to be answered 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.