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A chemical reaction occurs and absorbs 1720 J. How many calories is this? Is it an exothermic or endothermic reaction?
sodium carbonate na2co3 is used to neutralize the sulfuric acid spill. how many kilograms of sodium carbonate must be
Compute pH of a solution containing .030 moles of TRIS and .020 moles of the salt TRISHCl in a total volume of 1.50L
Calculate the observed rotation for a solution of a substance (2.0g/mL) that is 80% optically pure. A 2-dm cell is used. The specific rotation for the optically pure substance is +20o.
Calculate the cost in free energy to move 1mol K+ through the cell wall by active transport. Assume no change in K+ concentrations during this process.
What is the heat change in J associated with 74 g of gaseous butane at 91 oC changing to solid at -170 oC? c(butane) (gas) = 2.31 J/ (g.K) c(butane) (liq) = 1.65 J/(g.K) c(butane) (s) = 1.32 J/ (g.K) ?Hfus(butane) = 6.885 kJ/mol
what the molarity of H2SO4 if 15.85 mL of the solution is needed to neutralize 1.00g NaHCO3 molar mass 84.01 g/mol
briefly discuss interpretations of your observations and results. discuss how your observations illustrated
The nuclide 198 au 79 has a half life of 64.8 hours. what is the rate constant for the decay of 198 au 79. how much of a 0.0100g sample of 198 au 79 remians after 1 day.
a 2.70 g sample of solid ch33nhcl s is dissolved in 446 ml of water in a coffee cup calorimeter. once all of the
How could you determine (without tasting) whether a container of a colorless liquid contained ethanol or ethanol and sucrose
If the pistons in the four cylinders are each displaced with a pressure of 1.52 kbar and each cylinder is ignited once per second, how much work can the engine do in 1.00 minutes?
Give the chemical reactions that show why solutions of Al(NO3)3, Zn(NO3)2, and NH4NO3 have the pH values that you found.
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