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What is the formula for solving the following problem? The specific heat of Ti is .523 J/gcelcius. What is the final temperature of 62g of Ti intially at 41celcius after 8.5kj of heat is added?
Suppose you have 0.001 M solution of a dye with pka of7.2. from the color, concentration of protonated form is found to be 0.0002 M. Assume remainder of the dye is in the deprotonated form. What is
A calorimeter contains 34.0 mL of water at 13.5, ^{circ}C. When 1.80 g of rm X (a substance with a molar mass of 70.0 g/mol) is added. Calculate the enthalpy change, Delta H.
Calculate the standard emf of a cell that uses the Mg/Mg^2+ and Cu/Cu^2+ half-cell reactions at 25 degrees celsius. Write the equation for the cell reaction that occurs under standard-state conditio
The vapor pressure of CH3 COCH3 (propanone or acetone), is 67 Torr at 0 ? C and 222 Torr at 25 ?C. What is the standard enthalpy of vaporization of propanone? Answer in units of kJ/mol.
Draw an energy diagram that explains why pyridine is a better nucleophile AND leaving group in the following reaction.
Biological organisms live at great depths in the ocean and they have adapted their bodies to survive at extreme temperatures and pressures in the dark. One of the adaptations is to equilibrate thei
The vapor pressure of chlorine dioxide (ClO2 ) is 155 Torr at -22.75 ?C and 485 Torr at 0 ? C. What is the normal boiling point of chlorine dioxide? The universal gas constant is 8.314 J K/mol
A 0.5078g sample of impure nitrobenzene was treated with 1.044g of tin. when the reaction was complete, the residual tin was found to weight 0.338g. Calculate the percentage of nitrobenzene in the s
Concentrated sulfuric acid has a concentration of 18 M. How much concentrated sulfuric acid would be needed to make 255 mL of 1.0 M sulfuric acid?
The enthalpy of formation of ethanol, C2H5OH, is -277.o kJ/mol at 298.15K. Calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 and H2O.
Find the number of automobiles whose total mass is the same as 1.0 mol blueberries if The mass of an average blueberry is 0.77g and the mass of an automobile is 2000 kg.
A solution made by dissolving 5.00 g of a protein in 175 mL of solution has an osmotic pressure of 42.0 torr at 10 degree C. what is the molar mass of the protein?
Describe the coordination geometry (e.g. octahedral) for each metal ion and the MX_nL_m formula for deoxy and oxy form of hemerythrin.
How many moles of carbon dioxide can be produced if one tablet containing 0.0119 mol Sodium Bicarbonate is dissolved NaHCO_3 + H_3C_6H_5O_7 3 CO_2 + 3 H_2O + Na_3C_6H_5O_7
A solution of ethanol (C2H5OH) in water is prepared by dissolving 72.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this
Suppose you have a canister of Gas Z. The pressure of the gas is 500. torr when the temperature is 17.0 C. What happens to the pressure if you heat the canister to 57.0 C?
What will be the concentration of H2SO4 in the battery after 3.30 A of current is drawn from the battery for 8.00 hours?
Draw structures of the active sites of the deoxy and oxy form of hemerythrin, showing the complete ligands attached to the central metal ions (drawing N as a ligand is not complete),
The volumes for both reactants were mistakenly and unknowingly reduced by 5% in all of the Beer's Law plot solutions. Briefly explain your answers.
The oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 and a total pressure of 753 . What is the partial pressure of the oxygen gas?