20.3
22.0
acher said that only the results for experiment 3 showed the expected increase and decrease
in temperature.
(i) why was there no temperature decrease in experiment 1?
a the alkali was added too quickly
b
the starting temperature of the acid was too high
c the acid concentration was half what it should have been o
d the volume of acid used was 50.0 cm3 instead of 25.0 cm3

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Do polar molecules have ionic bonds?

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.