Finding out the final temperature of the mixture
25.0 mL of ethanol (density = 0.789 g/mL) initially at 7.4°C is mixed with 32.1 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
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A student placed 14.5 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mark on the neck of the flask was reached. The flask was then shaken until the
what concentration of x would be required for the transmittance to be increased by a factor of 3 when a factor of 3 when a 1.00-cm cell was used?
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Determine the work done by a 1-lb fluid system as it expands slowly within a piston-cylinder arrangement from an initial pressure and volume of 80 psia.
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.508g/L at 25C and 721mmHg?
The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6. What is the Ksp of barium carbonate?
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Ozone reacts with nitric oxide discharged from jet planes to form oxygen gas and nitrogen dioxide. 0.740g of ozone react with 0.670g of nitric oxide. Determine the identity and quantity of the reactant supplied in excess.
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