Suppose that one wishes to use reverse osmosis to reduce the salt content of brackish water containing 0.20 m total salt concentration to a value of 2×10^−2 m , thus rendering it usable for human consumption.
what is the minimum pressure that needs to be applied in the permeators to achieve this goal, assuming that the operation occurs at 280 k ?

indium, and thallium have three electrons i think

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

the answer is c i took the test