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Chemistry, 11.07.2019 21:30 stephstewart1209
Is pencil lead a element compound, heterogeneous, mixture ,or solution?
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8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
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The biosphere of the earth is made up of what compound? organic or inorganic?
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