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The gas is heated to 520.0 K at a constant volume corresponding to the initial volume c) The gas undergoes a reversible isothermal expansion at 290.0 K until the pressure is half of its initial valu
A process involving a perfect gas is carried out in which the temperature changes at constant volume. First, the process is carried out for a fixed value of ?T and the mass of the gas is doubled. Th
Complete combustion of 8.60g of a hydrocarbon produced 26.4g of CO2 and 12.6 g of H2O. What is the emperical formula for the hydrocarbon
Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 8.00 moles of aluminum sulfate Al2(SO4)3 . Express the number of moles of Al, S, and O atoms numerically, separated by commas.
Which of the following reactions would be classified as oxidation-reduction? 2Na(s)+Cl2(g)-----2NaCl(s) Na(s)+CuCl(aq)-------NaCl(aq)+Cu(s) NaCN(aq)+CuCl(aq)NaCl(aq)+CuCN(s)
Write the equilibrium expression for this weak acid dissociating in water? b. What is the pH of the solution after it had reached equilibrium
calculate the heat of reaction for 2PbS +3O2 yields 2PbO +2SO2 given the following information. PbS= -93.3 kj/mol. PbO=-219.7. SO2=-296.6. O2 = 0. I got -846kj, is that correct
use electron configurations to rationalize the octet cule. show how it works with covalent and ionic bonds
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added Va= 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL
Set of quantum numbers listed in the form: (n,l,ml, ms). for each set of quantum numbers, indentify the corresponding orbital (1s, 2s, 3s....etc) if not allowed say not allowed.
When aluminum metal is dipped in an aqueous solution of hydrochloric acid, hydrogen gas is produced with the formation of an aluminum chloride solution. Write the balanced chemical equation showing
Calculate the mass of KHC8H4O4 ( molar mass 204.44 g/ mol) that reacts with 15 mL of the NaOH solu-tion in Part A. 3. NaOHsolu-tioninPartA.3.
WHich of the following paris will form a precipitate? NaBr andMg(NO3)2 KCL and CuSO4 CaI2 and LI2CO3 or (NH4)2SO4 and MgCl2
Each student recorded the temperature change and calculated the enthalpy of neutralization. Two of the chemists will report, within experimental error, the same temperature change for the HCl/NaOH r
A mixture of gases containg 65.0g Co2 and 35.0g O2 has a total pressure of 745 torr. What is the partial pressure of O2 gas is
Which of the following pairs might be expected to be more ionic? (a) CaCl2 or MgCl2 (b)NaCl or CaCl2 (c) NaCl or CuCl (d) TiCl3 or TiCl4
A solution is .450M in HNO3 and 1.3M in Ba(NO3)2. what is the concentrations of No3 in the solution?
which on of the following is the correct formation reaction that properly defines a delta Hf value
Complete combustion of 3.40 of a hydrocarbon produced 10.4g of CO2 and 4.98g of h20. what is the emperical formula for the hydrocarbon
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va: Va = 0, 1,5,9, 9.9, 10. 10.1. and 12 mL.
One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is constant at 77°C. Weights are removed suddenly from the piston to give the following sequence of thr
Calculate the change in entropy that occurs when 18.66 g of ice at -14.6°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel. Assume that the molar heat capacities for
Draw major organic product of- Hexanoyl chloride & 2 equivalents of methyl amine (H2NCH3)
A. trigonal pyramidal, square planar, linear B. trigonal pyramidal, tetrahedral, see-saw C. trigonal planar, tetrahedral, square pyramidal D. T-shaped, see-saw, square pyramidal E. trigonal planar,
An acid-base neutralization reaction is exothermic. For the measurement of the enthalpy of neutralization, the change in Hn(n is suppose to be a subscript), for the reaction, heat is inevitably lost