Can anyone check my work/ me figure out how to do this?

determine the ph of the following solution.

a 4.5 x 10^-3 m hbr solution

my work:
all i did was -log(4.5x10^-3) and got 2.35 but i am not sure at all how to do this

2.35.

Explanation:

∵ pH = - log[H⁺].

[H⁺] = 4.5 x 10⁻³ M.

∴ pH = - log(4.5 x 10⁻³ M) = 2.346 ≅ 2.35.

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.