How many atoms of hydrogen are in a 1.0 g sample of acetic acid, CH3COOH? The molar mass of acetic acid is 60.06 g/mol. Na = 6.022x1023 units/mol
A. 2.5x1021 atoms H
B. 1.0x1022 atoms H
C. 4.0x1022 atoms H
D. 3.6x1025 atoms H

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

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