Will give 50 points !
a 10 m concentrated stock solution of nacl is used to prepare 3 liters of diluted 1 m solution. which of the following is true for the process used to achieve the required dilution?

the volume of stock solution used is less than 0.2 liters.
the volume of stock solution used is less than 3 liters. (i choose this answer)
the volume of the solvent used is less than 0.2 liters.
the volume of the solvent used is more than 3 liters.

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.