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What is the mass percent composition of carbon in a 0.100 g sample of a carbon-hydrogen-oxygen compound? The compound, when combusted in oxygen, provided 0.220 g CO2 and 0.239 g water.
What is the concentration of vinegar in moles per liter of solution (molarity, M)?
An oil bath maintained at 50.5 oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
calculate the amount of heat needed to boil 92g of ethanol beginning from a temperature of -69.2 c . be sure your
A solution is prepared by dissolving 1.29 g of an unknown organic compound in 15.00 g of cyclohexane. What is the molar mass of the compound if the solution has a melting point of -5.1°C
The only thing that is supplied to you is 1M Tris (pH 6.8) and 1M NaCl. You have full access to all the deionized H2O you may need. Plus 3 M HCl, 40 g/mol of NaOH pellets, and a pH meter.
dropped into flask containing dilute H2SO4 at a pressure P = 1.00bar, and temperature T= 325K. What is the reaction that occurs?
what is the molarity of a KOH solution if 50 mL is neutralized by 17.3 mL of a .150 M H2SO4 solution
Write the complete balanced equation for the formation of iron(III) hydroxide precipitate from a solution of iron(III) nitrate.
the following standard gibbs energy of formation values in kJ/mol: CH4, 50.7; H2O, -228.6; CO2, -394.4 calculate the standard free energy change for the combustion of CH4
Joe makes up a aqueous solution of a copper salt from some ore samples he has found in Contact, NV. He places a rod of pure copper into the solution making a cathode and uses a graphite rod as an anode
Determine the total number of moles of solid sodium hydroxide required to react with 844.00mL of 0.8700M phosphoric acid (H3PO4)
Determine the phase composition and temperature when equilibrium is reestablished?
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