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How many moles of gas are present if p=11 atm, v=12l, t=185k?
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2.38g of black copper (ii) oxide is completely reduced by hydrogen to give copper and water. what are the masses of copper and water formed? ?
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The total amount of fresh water on earth is estimated to be 3.73 x 10^8 km^3. what is this volume in cubic meters? in cubic feet?
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3) What is the mass of 1 mole of selenium (Se)?...
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