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1.50 moles of an ideal monatomic gas are initially at a temperature of 317 K. If
1.50 moles of an ideal monatomic gas are initially at a temperature of 317 K. If the gas gains 2730 J of heat and performs 780 J of work, what is its final temperature? A) 359 K B) 421 K C) 526 K D) 687 K E) 756 K
1d. determine the number of grams of water required at 100 Celsius to dissolve a
1d. determine the number of grams of water required at 100 Celsius to dissolve a mixture containing 20 g KNO3 and 2.0 g CuSO4*5H20 assuming that the solubility of one substance is not affected by the presence of another.
2. to the solution in Problem 1d at 100 Celsius, 15g of water are added and the solution is cooled to 0 Celsius
2.50 moles of a monatomic ideal gas expand adiabatically from an initial tempera
2.50 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300 K and an initial volume of 80.0 L to a final volume of 150 L. What is the final temperature of the gas? A) 840 K B) 563 K C) 426 K D) 287 K E) 197 K
20.0 L of a monatomic ideal gas at a pressure of 100 kPa expand adiabatically un
20.0 L of a monatomic ideal gas at a pressure of 100 kPa expand adiabatically until the volume doubles. What is the pressure in the gas at that point? A) 31.5 kPa B) 50.0 kPa C) 200 kPa D) 317 kPa E) 400 kPa
3.0 moles of gas expand from an initial volume of 0.040 m3 to a final volume of
3.0 moles of gas expand from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while the temperature of the gas is kept fixed at 300 K. How much work is done by the system? A) 5.6 kJ B) 6.6 kJ C) 7.6 kJ D) 8.6 kJ E) 14 kJ
700 J of heat are added to 12 moles of an ideal monatomic gas at constant volume
700 J of heat are added to 12 moles of an ideal monatomic gas at constant volume. What is the change in temperature? A) 4.7 K B) 5.2 K C) 5.8 J D) 6.8 K E) 9.3 K
A 308.5 mg sample contains malonic acid (H2A acid)(Form wt = 104.6). and sodi
A 308.5 mg sample contains malonic acid (H2A acid)(Form wt = 104.6). and sodium hydrogen malonate (NaHA) (form wt = 126.04). Titration to the first potentiometric end point required 18.06 ml of 0.1000 M sodium hydroxide. An additional 25.14 ml of sodium hydroxide was required to reach the second potentiometric end point. Calculate the percentage of malonic acid and sodium hydrogen m
A 40.0-L container is divided into two equal parts by a rubber membrane. One hal
A 40.0-L container is divided into two equal parts by a rubber membrane. One half of the container has 1.50 moles of an ideal monatomic gas at 250 K, and the other half is a vacuum. The container is well insulated, so there is no exchange of heat with the surroundings. The membrane breaks, and eventually the gas reaches a new equilibrium condition occupying the entire volume. What i
A balloon filled with 0.500 L of air at sea level is submerged in the water to a depth that produces
Question 1 of 12 0.0/ 4.0 Points A balloon filled with 0.500 L of air at sea level is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth?
A certain engine extracts 1300 J of heat from a hot temperature reservoir and di
A certain engine extracts 1300 J of heat from a hot temperature reservoir and discharges 700 J of heat to a cold temperature reservoir. What is the efficiency of this engine? A) 46% B) 54% C) 86% D) 27% E) 13%
A certain ideal gas has a molar specific heat at constant volume Cv = 7R/5. What
A certain ideal gas has a molar specific heat at constant volume Cv = 7R/5. What is its molar specific heat at constant pressure? A) 12R/5 B) 7R/3 C) 12R/7 D) 12R/5 E) 4R
A gas expands at constant temperature from an initial volume of 0.040 m3 and an
A gas expands at constant temperature from an initial volume of 0.040 m3 and an initial pressure of 210 kPa until its pressure drops to 135 kPa. How much work is done by the system? A) 3.0 kJ B) 3.7 kJ C) 4.1 kJ D) 5.6 kJ E) 7.9 kJ
A gas expands from an initial volume of 0.040 m3 and an initial pressure of 210
A gas expands from an initial volume of 0.040 m3 and an initial pressure of 210 kPa to a final volume of 0.065 m3 while its temperature is kept constant. How much work is done by the system? A) 3.7 kJ B) 4.1 kJ C) 5.3 kJ D) 5.6 kJ E) 7.9 kJ
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 w
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume (so that the process follows a straight-line path in a P-V diagram) from 110 kPa to 225 kPa. How much work is done by the system? A) 5.2 kJ B) 7.5 kJ C) 7.8 kJ D) 11 kJ E) 12 kJ
A gas expands from an initial volume of 30.0 L to a final volume of 65.0 L at a
A gas expands from an initial volume of 30.0 L to a final volume of 65.0 L at a constant pressure of 110 kPa. How much work is done by the gas? A) 3.85 kJ B) 10.4 kJ C) 3850 kJ D) 10.4 MJ E) 3.85 MJ
a mix of HE, Ar, Xe has total pressure of 3.00atm. what is the pp for Xe if pp f
a mix of He,Ar,Xe has the total pressure 3.00 atm. partial pressure of He is 0.400 atm, partial pressure of Ar is 0.450 atm, what is the partial pressure for Xe?
A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatic
A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatically from an initial volume of 120 L to a final volume of 40.0 L. What is the final temperature of the gas? A) 124 K B) 811 K C) 610 K D) 775 K E) 820 K
A monatomic ideal gas expands adiabatically from an initial volume of 72 L and a
A monatomic ideal gas expands adiabatically from an initial volume of 72 L and an initial temperature of 350 K until its temperature falls to 290 K. What is the final volume of the gas? A) 95 L B) 98 L C) 101 L D) 104 L E) 142 L
A monatomic ideal gas with an initial pressure of 500 kPa and an initial volume
A monatomic ideal gas with an initial pressure of 500 kPa and an initial volume of 1.80 L expands isothermally to a final volume of 5.20 L. How much work is done on the gas in this process? A) 955 J B) 900 J C) 875 J D) 1570 J E) 1700 J
A reversible engine operating between 500 K and 300 K has the same efficiency as
A reversible engine operating between 500 K and 300 K has the same efficiency as a reversible engine operating between 400 K and what lower temperature? A) 200 K B) 220 K C) 240 K D) 260 K E) 280 K
An athlete doing push-ups performs 650 kJ of work and loses 425 kJ of heat. What
An athlete doing push-ups performs 650 kJ of work and loses 425 kJ of heat. What is the change in the internal energy of the athlete? A) -225 kJ B) -1075 kJ C) 1075 kJ D) 225 kJ E) 276 kJ
An ideal monatomic gas undergoes an isothermal expansion. It is correct to affir
An ideal monatomic gas undergoes an isothermal expansion. It is correct to affirm that its entropy A) decreases. B) remains unchanged. C) increases. D) cannot be predicted with the data given.
according to neutralization capacity of antiacid add to conical flask 10 ml of the standard 0.5M HCL, then Stopper the flask and let it stand at room temperature for 10 min.-Add 5-6 drops bromophenol blue then titrate with standerdization 0.1NaOH -Calculate the (volume of HCl reacted with antacid)(Vr) knowing that Volume of the end point (volume o
according to Fagan's method titrate 30m1 of the mixed halides solution (K1 +NaCI) with standard 0.1M AgNO3 using flourescein indicator, then titrate another 30m1 of the original solution (KI +NaC1) with the same titrant using eosin indicator then Calculate the concentration of each halide in the mix. In g% knowing that (V end point for flask 1(using fluorescein) =70m1 and
Of a known amount of powdered aspirin tablets, take a weight that is equivalent to 600mg aspirin add 40m1 0.5M NaOH, heat for 15 minutes, titrate the excess of alkali with standardized 0.5M HCl using phenol red solution as indicator. Calculate the percentage label claim. . knowing that Volume of the end point (volume of HC1)=30m1 Mwt of aspi
If you had a dilution where you took 0.5 parts sample to 9.5 parts dilutents, what is the value of the actual dilution you performed? this is a review for us, and I forgot how to do these crazy dilution problesm,=. thx if you can help
An experiment was carried out to determine the chemical formula of a metal oxide (MxOy) by burning the metal. The similar experiment but using Magnesium is described in the previous article: "Stoichiometric experiment explained". You can also watch the video for the experiment from the last linked item.
The data from the experiment can be found from this module
Calculate the change in interaction potential in dissolving a MgCl2 salt crystal
Using magnesium chloride salt as your reference, calculate the following. Some useful information: Ionic radii: Mg2+= 86 pm, Cl- = 167 pm, liquid water dipole =2.95 D, water radius 140 pm, assume that Mg2+ and Cl– are each hydrated by 6 waters (octahedral) and assume that the εr = 1 (even though you are using water, there are no waters between the dipole and the ion, thus the v
Calculate the energy lost by photons Compton scattered at 45°, 90° and 135° for incident photons of energies 5?
Calculate the energy lost by photons Compton scattered at 45°, 90° and 135° for incident photons of energies 50 keV and 100 keV. What fraction of the photon's energy is lost in each case? Present your results in a table. What conclusions can you make about the effect of photon energy on the fraction of energy lost?
Using the following data reactions: delta H° (kJ) H2(g) + F2(g) 2HF(g) –542 H2(g) -->2H(g) 432 F2(g) -->2F(g) 154 calculate the energy of an H-F bond. A) 11
2HF(g) –542
