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A dipole having dipole moment of 1.5 nC*m is oriented at 30 degrees to an electric field, 4.0*10^6 N/C. (i) Find out the torque on the dipole? (ii) Determine how much work is needed to rotate the di
Calculate the standard enthalpy of formation (ΔHf) of NaF (s) when .560g of Na (s) reacts with excessF2 (g) to produce the NaF (s), 13.8 kj of heat is evolved at standard state conditions.
Thirty two students taking Calculus II and Physics I, and 11 students taking Physics I and Discrete Mathematics II. How many of such students are taking exactly two of the three courses?
A person's prescription for her new bifocal glasses calls for the refractive power of -0.500 diopters in the distance-vision part and a power of around 1.90 diopters in the close-vision part.
Explain how much heat is liberated when 7.15 g CaO(s) is dropped into a beaker which is having 152 g H2O?
Determine what fraction of the incident intensity emerges from the Polaroid? When this beam is then incident on the second sheet of Polaroid having its transmission axis all along the vertical, find
Explain what weight of water would be necessary to carry over 1g of toluene if a mixture of toluene and water is distilled at 97 C.
Identify the uncertainty in position associated with an electron that is moving with a velocity of 289 km/s. The uncertainty in the velocity is 5.00%. The electron rest mass is 9.11e-31kg.
The two point charges are separated through 10.0 cm and have charges of +3 µC and -3 µC, correspondingly. Determine the electric field at a point midway among the two charges?
Determine the kinetic energy of an electron (in J) that is ejected from the sodium by light with a wavelength of 340 nm? Electrons are ejected from sodium metal by any light that has a wavelength s
The uncertainty in the energy of electron in a certain state is around 2 x 10^-25 J. Give the energy uncertainty in terms of eV and determine the uncertainty in the lifetime of the electron in that
Explain how many microamperes (1 A = 1 C/s) of electrical current are formed by a photoelectric cell that is bombarded by the 5.90x1013photons each second? T
What decision expected value approaches recommend? Find indifference probability for $0 payoff? What decision would make based on expected utility approach? In this case are you risk taker or risk avo
Determine the binding energy of the hydrogen electron for states with the given principal quantum numbers.
240.1kJ is given off when 1 mol H2O (g) forms from its elements at a specific set of conditions. Under the same conditions, 283.4 kJ is given off when 1 mol H2O (l) produces from its elements.
A 237 -g piece of molybdenum, initially at 100 degrees C, is dropped into the 244-g of water at 100 degrees C. Describe the specific heat capacity of molybdenum when the system comes to the
A tank of carbon dioxide gas (CO2) of 22.7 L is at a pressure of 9.00 x 105 Pa and temperature of around 20.9°C. (i) Compute the temperature of the gas in Kelvin.
Calculate the percent by mass of citric acid in the sample if an unknown solution contains citric acidC6H8O7 And sodium sulfateNa2SO4 if 1.731g of the solution requires 29.32ml of .487M NaOH
The active ingredient in the allergy medication Claritin contains hydrogen (H), carbon (C), nitrogen (N), chlorine (Cl), and oxygen (O). Its molecular formula is C22H23ClN2O2.
The current in an electron beam in the cathode-ray tube is computed to be 70 µA. Determine the number of electrons which strike the screen in 25 seconds?
A 42.6-mL volume of hydrogen gas is collected over water at 20 degrees Celsius. A 42.0-mg sample of aluminum reacts with an excess of 6MHCl. The pressure of the "wet" hydrogen gas is adjusted to atm
Explain how many milliners of hydrogen gas evolved at STP? Assuming the complete reaction of 36.0mg of pure aluminum, according to the reaction described by equation 2Al (s) + 6H (aq)-> 2Al (aq)
Write down a thermo chemical equation for this reaction. When 2 mol of potassium chlorate crystals decompose to potassium chloride crystals and oxygen gas at constant temperature and pressure, 78.0
If particular decision maker allots the indifference probability of 0.000001 to $0 payoff, would the individual buy the lottery ticket? Use expected utility to justify the answer.