Compared to an electron, which particle has a charge that is equal in magnitude but opposite in sign?

(1) an alpha particle (2) a neutron

(3) a beta particle (4) a proton

What occurs at the anode of a galvanic cell? a. Solid-metal formation b. A reduction half-reaction c. An oxidation half-reaction d. The electroplating of another metal

The partial electron configuration of an atom with 12 electrons is shown. 1s22s22p6X Which of the following does X represent? 2d2 3s2 3p2 4s2

This is a summary of the findings of an experiment

What is the [H+] if the pH of a solution is 7.90

What is the reactant for sodium nitrate + water?

For each example of a phase change, identify whether heat is absorbed from the surroundings or released into the surroundings. A popsicle melts on a hot day. Rubbing alcohol evaporates from the surface of the skin.

How are scientific questions answered?

How much heat is required to increase the temperature of 100.0 grams of iron from 15.0oC to 40.2oC? (The specific heat of iron is 0.46 J/g xoC).

An adhesive dealer receives an order for 3000 lb of an adhesive solution containing 13% polymer by weight. On hand are 500 lb of 10% solution and very large quantities of 20% solution and pure solvent.

How to convert moles 3.612 x 10^23 atoms Fe