Which half reation equation represents the reduction of an iron (II) ion? Fe+2->Fe+3 + e - Fe+2 + 2e - - >Fe Fe+3 + e - - > Fe+2 Fe->Fe+2 + 2e-

4. Assume that the water stream is replaced by a stream of CCI ... Predict what would happen in each case: a. charged comb b. PVC pipe C. charged balloon

A piece of metal with a mass of 159 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 41 mL. What is the density of the metal?

How do concentrated basic solutions differ from other basic solutions?

Buffers are because of low tolerance to changes in pH. a. Critical to biological systems because of low b. Present in our blood stream c. Usually mada dally made up of a weak acid and its conjugate ban d.

Who determines the crude oil specifications at production facilities?

Prepare a solution that is 0.1 M acetic acid and 0.1 M sodium acetate by measuring out 5.0 mL of the 1.0 M acetic acid solution and 5.0 mL of the 1.0 M sodium acetate solution in a 100 mL graduated cylinder, diluting the 10.

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)