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A capacitor is placed across a battery and permitted to charge fully. The battery is then detached and the plates of the capacitor are then moved apart (d rises).
Bromthymol blue, an indicator with a Ka value of 1.00× 10-7, is yellow in its prorogated form and turns blue when protons are lost. For most indicators, about a tenth of the initial form
She sails NORTH for 1 hour, then turns and sails EAST for 30 km. She sails at the constant speed of 6 km/hr. Determine how much time was she within 8 km of buoy?
A straight rod comprises of a 1.44 cm long piece of aluminum joined to a 2.61 cm long piece of steel. Determine by how much will the length of this rod modify if its temperature is raised from 12&de
Discuss how much heat is absorbed when the 1 mol of CS2(g) forms from its elements at these conditions? When 1 mol of CS2(l) forms from its elements at1 atm and 25°C, 89.7 kJ is absorbed, and it t
Determine the partial pressure of each gas and the total pressure if the temperature of the gas is 20 degrees Celsius. PO2, PHe, P total = atm A deep-sea diver uses a gas cylinder with a volume of
A heat engine consists of max theoretical efficiency of 25% if the high temperature reservoir is at Th=127 C. i) At what would be the temperature of the low temperature reservoir, Tc this were a Carno
Determine the absolute third-law entropy of a "solution" which is having one mole of each gas. Suppose ideal behavior. At 25oC and 1 atm pressure, the absolute third-law entropies of methane and eth
A typical nuclear power plant produces electricity at the rate of 900 MW. The efficiency of transforming thermal energy to the electrical energy is and the plant runs at full capacity for 80% of the
Upon the addition of another mole of B to the solution, the vapor pressure increases to 347 mmHg. Determine the vapor pressures of pure A and B at the 84oC. A mixture of liquids A and B exhibits ide
Explain why does copper react with the concentrated sulphuric acids at the high temperatures and not with dilute sulfuric acid at lower temperatures?
A straight rod comprises of a 1.44 cm-long piece of aluminum joined to a 2.61 cm long piece of steel. Determine by how much will the length of this rod change when its temperature is raised from 12&
Determine the weight of precipitate that will dissolve in the 5.0x10^2 mL of water. AgBr(s) (FW=188; Ksp=5.0x10^-13)
A car tire consists of V = 0.015 m^3 on a day if the temperature is 5 C and the atmospheric pressure is 1.02 atm. Beneath such conditions the gauge pressure is measured to be 1.7 ATM. After the car
Determine the numbers of grams of MgSO4 can be added to the solution before BaSO4 begins to precipitate, starting with the10.0 ml of 4.00 ×10-2 M BaI2?
Determine the numbers of moles Cl- were present in the sample when a solid chloride sample weighing 0.3147g needed 43.75mL of 0.05273M AgNO3 to reach the Ag2CrO4 end point.
A mass of 0.300 kg oscillates on a spring having force constant 2.50 N/m and is subjected to the damping force Fx = -bvx. Determine the frequency of oscillation when b = 0.900 kg/s? For what value o
The deadly bacteria strain comprises of 10000 cells and then grows by 200 cells a day. Another strain of bacteria comprises of 10 cells but then grows by 50% a day. When will two strains be equal?
Determine the numbers of alkene products, including the E,Z isomers, might be obtained by the dehydration of 3-methyl-3-hexanol with aqueous sulphuric acid?
The crankshaft in a race car goes from rest to 3100 rpm in 2.6 s. i) Determine the angular acceleration of the crankshaft?
Determine the concentration of hydrochloric acid in the resulting solution? One half liter (500 mL) of 2.50 M HCl is mixed with the 250 mL of3.75 M HCl. Assuming the total solution volume after mix
A simple pendulum oscillates having frequency f. Determine its frequency when it is accelerated at 0.5g (a) upward (b) downward?
Determine the molar mass of the solid acid if 0.2178 g of a dipodic solid acid is neutralized by 44.81 mL of0.0953 M NaOH. Explain in detail.
1.5 moles of an ideal diatomic gas are compressed isothermally to one third times the initial volume at 27 C. Determine work, heat, change in internal energy and change in the entropy.
Calculate the wavelength of an electromagnetic wave the velocity of which is 3.0E+10 cm/sec and the frequency of which is 3.8E+13 Hz? Enter your answer as a length in cm.