Abuffer is generated using nh3 and nh4cl. which of the following is true?
a.) any buffers generated for which [nh3]/[nh4cl] is the same will have identical ph
b.) if [nh3]=[nh4cl], the ph will equal the pka for nh3
c.) any buffers generated for which [nh3]/[nh4cl] is the same will have an identical buffering capacity
d.) if [nh3]/[nh4cl] in buffer 1 is greater than buffer 2, then buffer 1 will have a greater buffering capacity

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume