Which two of the following contain the same number of molecules? show how you arrived at your answer. 2.0g of methane, ch4 8.0g of oxygen, o2 2.0g of ozone, o3 8.0g of sulphur dioxide, so2

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution

Essay-alternative energy sources research sources of energy that are being developed. write a report of 350-400 words discussing the information you learned concerning the development of various energy sources and the impact that you think they will have on your life. include sources cited at the end of your report using the mla format. follow the rubric guidelines. note that wikipedia is not an appropriate resource for a research paper. worth 99

Can anyone answer these questions? ? i need it before 1: 00pm today