In the video, we use the atomic model to describe pressure as resulting from:
a) the energy loss when gas atoms collide with the walls of their container.
b) the kinetic energy of individual gas atoms.
c) the force from the collision of gas molecules with the walls of their container.
d) the collision of atoms in a gas with each other.

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

All motion is caused by force? true or false

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid