Both passive and active transport move substances into and out of the cell
across the cell membrane. However, passive transport
does not require the use of energy because molecules
move from an area of high concentration to an area of
low concentration. Active transport does require the
use of energy: because molecules move from an area of
low concentration to an area of high concentration,

What does x represent in the formula for the compound xcl4?

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]