Which best describes the asteroid belt a. another name for the oort cloud b. the region where comets originate c. large chunks of gas, dust and ice d. millions of small rocky objects

What substance has a mass of 9.5g and volume of 2.1cm^3

Ajar contains a certain substance. which observation would show that the substance must be either a solid or a liquid?

The amount of iron in ore can be quantitatively determined by titrating a solution of the unknown with a standard solution of dichromate, cr2o72−. the net ionic equation is 6fe2+(aq)+cr2o72−(aq)+14h+(aq)→6fe3 +(aq)+2cr3+(aq)+7h2o(aq) part a the titration of 25.0 ml of an iron(ii) solution required 18.0 ml of a 0.230 m solution of dichromate to reach the equivalence point. what is the molarity of the iron(ii) solution?