Chemistry, 22.07.2019 06:50 ngozi1122357
Suppose an egyptian mummy is discovered in which the amount of carbon-14 present is only about oneone-fifthfifth the amount found in living human beings. the amount of carbon-14 present in animal bones after t years is given by yequals=y 0 e superscript negative 0.0001216 ty0e−0.0001216t, where y 0y0 is the amount of carbon-14 present in living human beings. about how long ago did the egyptian die?
Answers: 1
Chemistry, 22.06.2019 17:20
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.
Answers: 2
Chemistry, 23.06.2019 06:40
8. how much enthalpy/heat is transferred when 0.5113gof ammonia (nh3) reacts with excess oxygen according| to the following equation: 4nh3 +502 - 4n0+ 6h20ah = -905.4j
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Chemistry, 23.06.2019 12:50
Complete the paragraph to describe the characteristics of a borane molecule (bh3). the lewis structure and table of electronegativities are given. the bond polarities in bh3 are , the molecular shape is , and the molecule is .
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Chemistry, 24.06.2019 01:30
Match element to how many valence electrons it has al s na si mg p 4 5 3 6 2
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Suppose an egyptian mummy is discovered in which the amount of carbon-14 present is only about oneon...
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