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The position vector of a 1.0-kg particle is given by r = 3 i + 2 j + 5 k and its velocity by v = 8 i - 2 k. Find the magnitude of the particle's angular momentum in kg.m2/s
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the
The distance between the eyepiece and the objective lens in a certain compound microscope is 12.7 cm. The focal length of the objective is 0.540 cm, determine the overall magnification of the micros
suppose a 0.100 M solution of each of the following substances is prepared. Rank the pH of the resulting solutions from lowest to highest: KF, NH4I, HBr, NaCl, LiOH.
Calculate ?G°rx (in kJ) at 582.77 K for this reaction. Report your answer to two decimal places in standard notation (i.e. 123.45 kJ).
The gas-phase reaction Cl(g)+HBr(g) => HCl(g)+Br(g) has an overall enthalpy change of -66kJ. The activation energy for the reaction is 7kJ. What is the activation energy for the reverse reaction?
A reaction in which A, B, and C react to form products is first order in A, second order in B, and zero order in C. Which of the following most accurately represents the rate law for this reaction
A hydrogen atom in its ground state is excited to the n = 5 level. It then makes a transition directly to the n = 2 level before returning to the ground state. What are the wavelengths of the emitte
A block slides upward on a rough, vertical wall at constant velocity when a force F of 60 N acts on it at an angle ? = 60? to the horizontal. Determine the force of kinetic friction on the block
The pressure exerted by a phonograph needle on a record is surprisingly large. what pressure is exerted on the record in N/m2
In a reaction involving reactants in the gas state, how does increasing the partial pressures of the gases affect the reaction rate
A 0.70 kg ball is moving horizontally with a speed of 5.1 m/s when it strikes a vertical wall. What is the magnitude of the impulse of the ball
Calculate the number of pounds of CO2 released into the atmosphere when a 18.0-gallon tank of gasoline is burned in an automobile engine.
A 7450kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. Find the volume of water displaced by the iceberg
Would you expect a carboxylic acid group within the water-free interior of a protein to have a higher or lower Ka than it would have if it occured on the protein's surface, where it is hydrated
If a chain of 35 identical short springs linked end-to-end has a stiffness of 400 N/m, what is the stiffness of one short spring
A slit of width 0.50 mm is illuminated with light of wavelength 500 nm, Find the widths of the first and second maxima of each side of the central maximum
What is the molecular formula of the compound? , draw Structures for the molecule (1 bonus mark for every acceptable structure, up to a maximum of 5 bonus marks).
The Boeing 777 aircraft has a takeoff mass of 255000kg and a takeoff speed of 115m/s, What airflow speed across the top of the wing is necessary for the plane to fly
Classify the following room-temperature reactions as homogenous catalysis or heterogeneous catalysis: reaction of carbon monoxide and oxygen in a presence of platinum
Calculate the wavelength of light in vacuum that has a frequency of 7.8 108 Hz. and What is its wavelength in carbon tetrachloride
What are the differences in the procedure that account for Sn(II) being formed in one and Sn(IV) in the other? Try to rationalize why these differences in procedure result in different products bein
Methyl orange is an indicator that changes color over a range from pH = 3.1 to pH = 4.4 . What is Ka of methyl orange
A 2.60 kg steel gas can holds 15.0 L of gasoline when full. What is the average density of the full gas can, taking into account the volume occupied by steel
Based on the ionization energies of the alkali metals, which alkali metal would you expect to undergo the least exothermic reaction with chlorine gas