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About 70 million tons of paper are used per year in the U.S. If the U.S. population is 301.6 million people, how many kilograms of paper are used by the average citizen?
The bottoms of the beakers are at the same level. The one on the left is filled with 1 L of water at 20 C with a coefficient of viscosity of 1 cP. How long will it take for the beaker on the left to have 60% of its original level
Determine mass of water is contained in 2.8 Litres of the vapor in this solution at 55 degree celcius temperature express your answer in grams
the element oxygen was prepared by joseph priestley in 1774 by heating mercuryii oxide.hgos hgl frac12o2g ho 90.84
A chemical engineer injects limestone into the hot flue gas of a coal burning power plant to form lime, which scrubs SO2 from the gas and forms gypsum (CaSO4.2H2O). Find Kc for the following reaction
an oxygen tank kept at 20.0?c contains 28.0 moles of oxygen and the gauge reads 31.0 atm. after two weeks the gauge
Calculate the density you would expect for heavy water by assuming that deuterium (^2H or ^2D) is the same size as normal hydrogen (^1H) when it is part of the water.
a solution of sulphide ct10-6m is blended into a 0.4m sodium chloride solution in a closed container. plot a pc-ph
Explain how does unique physical and chemical properties of water contribute to significance of water for life on Earth to survive.
empower minorities and women by thinking outside the box to develop opportunities and mechanisms for learning thus
477 j amount energy is added to a 74.0 grams sample of h2o at a temperature of 21 degree celsius. determine what will
the outside of the flask is dried before its mass is measured. 1) Will the mass of the vapor in the flask be too high too low, or unaffected. 2) Will the molar mass of vapor in the flask be reported too high, too low, or unaffected.
Calculate the enthalpy change, Delta H, for this reaction per mole of \rm X. Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 \rm J/(g \cdot {^\circ C}) and 1.00 \rm g/mL] and that no heat is lo..
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