What is the oxidation number of O in PO4^3-?

A. 0

B. - 1

C. - 2

D. - 3

E. None Of The Above

Terms best describes the religious beliefs of the Mesopotamians

4Fe + 3O2à 2Fe2O3 is a balanced equation. What is the charge on each iron (Fe) ion in hematite (Fe2O3) ? A. + 1 B. + 2 C. + 3 D. + 4

Be sure to answer all parts. A sample of a compound consisting only of copper and sulfur contains 88.39 g of metal and 44.61 g of nonmetal.

What is now true about the sugar? A. The sugar is no longer made up of particles because all of the particles dissolved in the water. B. The sugar is still made up of particles, but they got smaller when they dissolved. C.

At 1.0 atm, terell heats a sample of soild caffeine at 178c the soild converts directly into gas. what is the name of this phase change?

Write the net ionic reation for the neutralization of hcl by naoh. calculate hrxn for reaction from the enthepies of formation of the reactiom and product

Can you zooley answers.

Select all that apply. Based on the properties that change in a chemical reaction, which are examples of chemical changes? baking a cake burning firewood leaf color from summer to fall shredding paper

Chemistry is the study of matter true or false

Which of the following reactions are redox reactions? a. Al (s) + 3Ag + (aq) →Al3 + (aq) + 3Ag (s) b. SO3 (g) + H2O (l) →H2SO4 (aq) c. Ba (s) + Cl2 (g) →BaCl2 (s) d. Mg (s) + Br2 (l) →MgBr2 (s)