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A 80 pF capacitor is charged to a potential difference of 140 V, and the charging battery is disconnected. what is the capacitance of this second capacitor
How much heat is required to vaporize 55.8g of acetone at its boiling point? The heat of vaporization of acetone at its boiling point is 29.1 kJ/mol
A 3500 resistor and a 1.7 µF capacitor are connected in series across a generator (60.0 Hz, 120 V rms)
What problems did the Capetian kings of France face?
Balance the following equations: a) Zn(s)+H2SO4(aq)--->ZnSO4(aq)+H2(g); b)Al(s)+H2SO4(aq)--->Al2(SO4)3(aq)+H2(g); c)K2SO4(aq)+BaCl2(aq)--->BaSO4(s)+KCl(aq); d) CaCO3(s)--->CaO(s)+CO2(g
An ac generator has a frequency of 4.80 kHz and produces a current of 0.0400 A in a series circuit that contains only a 231 resistor, Obtain the voltage of the generator
Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house.
A series RCL circuit has a resonant frequency of 750 kHz, what is the value of the inductance?
Predict whether a precipitate will or will not form for each of the following. In addition, determine whether the resulting solution will be saturated or unsaturated.
What exactly is the Musliam waqf, and how did it come to hold all this territory? Who is really in charge there?
After the defeat of Napoleon, European Rulers reorganized the political borders of Europe. What were their primary goals? Which country grew in size in order to contain or control France to the north?
A Doppler ultrasound machine uses a probe emitting ultrasound waves at 5MHz to probe the speed of blood cells moving in an artery, What is the wavelength through the soft tissue of ultrasound produce
The sound intensity of a whisper is 1.0x10^-10 W/m^2 at one meter distance from the source. At what distance does the intensity level drop by an additional 1dB
All of the following are balanced equations. State the number of atoms of each element in the reactant and in the products. a) 2N2(g)+3O2(g)--->2N2O3(g); b)Al2O3(s)+6HCl(aq)--->2AlCl3(aq)+3H2
What is the concentration of each of the following solutions? a) The molality of a solution prepared by dissolving 25.0g of H2SO4 in 1.30L of water b) The mole fraction of each component of a soluti
An 8cm^3 ice cube is floating in a 10x10x10 cm glass container completely filled with water, How much water is going to spill over when the ice melts
What were some of the reasons for Kievan Rus's isolation from, and suspicion toward, western Europe?
Determin whether each of the following equation is balanced or unbalanced: a) PCl3(l)+Cl2(g)--->PCl5(s), b)CO(g)+2H2(g)--->CH3OH(l), c)2KClO3(s)--->2KCl(s)+O2(g), d)Mg(s)+N2(g)--->Mg3N2
A volume of 2000 cm^3 of carbon dioxide gas at normal pressure and 20 C is compressed isothermally into a 2 cm^3 container, what is the final pressure inside the container
A mixture of 2.0 mol of CO(g) and 2.0 mol of H2O(g) was allowed to come to equilibrium in a 10.0L flask at a high temperature. If Kc-4.0, what is the molar concentration of H2(g) in the equilibrium
How much energy is lost through your hands in one minute after touching on a cold surface at 10 C compared to being exposed to cold air at 10 C
Calculate the molarity of a solution containing KCI and water whose osmotic pressure at 31.4 degrees Celsius is 125 torr. Assume complete dissociation of the salt. What are the steps to arrive at an
What is the expected boiling point of a solution prepared by dissolving 5.83 g of sodium iodide (NaI) in 59.2 g of water (H20)? For water, Tb = 100.00 degrees Celsius and Kb = 0.512 degrees Celsius
The strength of the magnetic field within a solenoid is B = 3.4 × 10-2 T, single loop is placed in the solenoid parallel to the plane of each loop in the solenoid, What is the total number of tu
15.0 mL of 0.50 M NaOH is added to a 100.-mL sample of 0.376 M NH3 (Kb for NH3 = 1.8 x 10^-5. What is the equilibrium concentration of NH4^+ ions? The answer is 9.0 x 10^-5 M.