What si unit would you use to measure the length and width of a music cd package

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

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