Author Question: What effect would powdering the solid have on the rate of dissolving the solid in a ... (Read 101 times)

jc611 · **on:** Jul 28, 2018

What effect would powdering the solid have on the rate of dissolving the solid in a liquid?

Question 2

A particle with electric charge is fired into a region of space where the electric field is zero. It moves in a straight line. Can you conclude that the magnetic field in that region is zero?
1.Yes, you can.
2.No; the field might be perpendicular to the particles velocity.
3.No; the field might be parallel to the particles velocity.
4.No; the particle might need to have charge of the opposite sign to have a force exerted on it.
5.No; an observation of an object with electric charge gives no information about a magnetic field.

Joc · **Reply #1 on:** Jul 28, 2018

Answer to Question 1

Powdering the solid increases the rate of dissolving because it increases the surface
area of the solute in contact with the solvent.

Answer to Question 2

3