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A 200 ml sample of 0.200 M HBr solution is titrated with 0.2 M NaOH. Calculate the pH of the solution after 19.9 ml of NaOH have been added.
Write the possible polymeric structure formed between sebacoyl chloride and butane-1,4-diamine, what is the appropriate name for this polymer
If 2.50 mol of copper and 5.50 mol of silver nitrate are available to react by single displacement, identify the limiting reactant.
Derive an expression for (δU/δV)T for a gas that obeys the van der Waals equation of state.
To determine the molecular formula of a compound - gas was mixed with calcium chloride solution,
one mole of an ideal gas (Cp=7R/2) in a closed piston cylinder is compressed from initial state of temperature =100 K pressure = 0.1 MPa to final state of pressure =0.25 MPa by the following pathways.
calculate the volume of a sample of carbon monoxide at -21degc and 359 torr if it occupies 3.65 l at 298 k and 758
Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide. How many grams of sodium iodide, NaI must be used to produce 19.1g of iodine, I2
The specific heat capacity of silver is 0.235 J/g K. Its melting point is 962 C and its enthalpy of fusion is 11.3 kJ/mol. What quantity of heat in joules is required to change 5.00 g of silver from a solid at 25 C to a liquid at 962 C?
A 0.150-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
The dipole moment (mu) of HBr (a polar covalent molecule) is 0.82 D (debye), and its percent ionic character is 12.1%. Estimate the bond length of the HBr bond in picometers.
What is the nature of the forces of attraction in it. Explain in terms of their structures why each of the following pairs of substances have very different chemical and physical properties
Calculate the molality of C2H5OH in a water solution that is prepared by mixing 50.0 mL of C2H5OH with 108.4 mL of H2O at 20°C. The density of the C2H5OH is 0.789 g/mL at 20°C. (Assume the density of water at this temperature is 1.00 g/mL.)
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