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Calculate the force of attraction (in N) between a cation with a valence of +4 and an anion with a valence of -1, the centers of which are separated by a distance of 6.1 nm.
Calculate the energy of attraction (in eV) between a cation with a valence of +2 and an anion with a valence of -1, the centers of which are separated by a distance of 7.1 nm.
Question: A heat engine operates in a Carnot cycle between 76.0°C and 355°C. It absorbs 21000 J of heat per cycle from the hot reservoir. The duration of each cycle is 3.00 s. (a) What is th
A gas is compressed at a constant pressure of 0.270 atm from a volume of 8.00 L to 5.00 L. In the process, 400 J of heat energy flows out of the gas. (a) What is the work done by the gas? (b)
The efficiency of a Carnot engine is 27%. The engine absorbs 795 J of heat per cycle from a hot reservoir at 499 K. Determine the heat expelled per cycle and the temperature of the cold reservoir.
A gas is compressed at a constant pressure of 0.320 atm from a volume of 8.00 L to 5.00 L. In the process, 400 J of heat energy flows out of the gas. What is the work done by the gas? What is the ch
According to the kinetic theory of gases, the pressure of a gas is due to:
what are the mass and speed (in the initial particle rest frame) of the second particle?
At relatively high temperatures nitrogen and oxygen more readily form a compound according to: N2(g) + O2 <-> 2NO(g). Calculate kp given that the initial pressures of nitrogen are 95 atm and 8
The building's roof is 28.0 m above the level ground. (a) At what time does the ball hit the ground? (b) At what horizontal distance does the ball hit the ground?
Then you turn back around and hurry on to class. If your speed is a constant 0.95 m/s as you are walking (both directions), what is your average velocity from the time you leave Dale Hall to the tim
A mass is trapped on the x-axis. Its potential energy is given by U=-2x^3 -3x^2 +12x. Where x is i meters and U is in joules. A) Determine an expression for the force that acts on the mass as a functi
If 61.5 L of oxygen at 18C and an absolute pressure of 2.45 atm are compressed to 48.8L and at the same time the temperature is raised to 56 degrees C, what will the new pressure be?
Calculate (a) the partial pressure of nitrogen and (b) the mole fraction of each gas in the original mixture.
A 74.8 g sample of copper at 143.2°C is added to an insulated vessel containing 165 mL of glycerol, C3H8O3 (l) (d = 1.26 g/mL), at 24.8°C. The final temperature is 31.1°C. The specific hea
Question: How much heat is released when a mixture containing 23.0 g CS2 and 23.0 g Cl2 reacts by the following equation? CS2(g) + 3Cl2(g) ---> S2Cl2(g) + CCl4(g) delta H= -230 kJ
Question: How many stereoisomers are possible for CH2Cl2 provided that the central carbon has a square planar geometry?
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179g/mL , should be used to make 4.95 L of an HCl solution with a ph of 1.5?
Rank the following compounds in order of decreasing acid strength using periodic trends.
In a particular redox reaction, Cr is oxidized to CrO42- and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution.
The heat capacity of the calorimeter is 91.0 J K-1 and the heat capacity density of the acid solution is 4.144 J K-1 cm-3. Determine the standard enthalpy of formation of the aqueous sodium
What is the mass in milligrams of solute in 656 ml of solution that contains 4.96 ppm Pb(NO3)?
Two different compounds have to formula XeF2Cl2. Write Lewis structure for these two compounds. How measurement of dipole moments might be used to distinquish between them?
When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05 K. Calculate the calorimeter constant. By how much will the temperature rise when 10 mg of phenol
Then the gas was mixed with calcium chloride solution, which converted all the F to 0.2631 g of CaF2. Determine the molecular formula of the compound.