Calculate the heat of reaction AH for the following reaction: 2 HCl(g) + F2(g) → 2 HF(g) + Cl2(9)

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

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