Michelle is trying to find the average atomic mass of a sample of an unknown element. She finds that her sample contains 54.76% of an isotope with a mass of 112.3020, while the rest of the sample is an isotope with a mass of 116.8442. What is the average atomic mass of her sample? Please round your answer to 0.01 amu.

How is the composition of a meteorite relevant to finding out the composition of earth's core?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.