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Chemistry, 21.06.2019 16:10
Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer
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Chemistry, 22.06.2019 03:30
In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?
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Chemistry, 22.06.2019 05:30
Compare and contrast physical changes with chemical changes.
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What is needed to change the state of matter...
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