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A battery's ideal voltage is 12.0 V; its internal resistance is 1.46 ohms. what is the actual voltage supplied by the battery
Calculate the amount of heat transferred when 23.0 of CH_2OH(g) is decomposed by this reaction at constant pressure.
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
You are standing on a scale inside an elevator. The scale reads exactly your weight. What could be the velocity of the elevator, What is the acceleration of the elevator
If the pH of a 1.00-in. rainfall over 1600 miles^2 is 3.30, how many kilograms of sulfuric acid, H2SO4, are present, assuming that it is the only acid contributing to the pH. For sulfuric acid, Ka1
A sample of copper was pretreated and diluted to 500mL and portions of this solution were analyzed by measuring the absorbance of a copper (I) complex of 1, 20 phenanthroline using a standard additi
Assuming that at low pH the principle species in solution is HA and at high pH the principle species is A-, calculate the pKa of the indicator.
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 4.0m/s. What is the speed in the second segment
How do you calculate the coulomb energy of interaction when doing the dissociation energy of an ionic compound. Particularly for the KF molecule
Water flowing through a 3.0cm -diameter pipe can fill a 200L bathtub in 3.3min. calculate the speed of the water in the pipe
Write the defining expression for the conditional solubility product constant, Ksp'. Than For the Ca2+ and F- ions, write the mathematical relations defining activity of each ion in terms of its con
An alpha particle (a helium nucleus) is traveling along the positive x-axis at 1350 m/s, How far does the particle travel before hitting the tube wall
Compute the equilibrium concentration of La3+ in the resulting solution. Ignore activity coefficients. Ksp = 1.0 x 10-11
A 35.1 kg girl and a 58.4 kg boy are on the surface of a frozen lake, 14.5 m apart. Calculate the magnitude of the girl's acceleration
Give the equations representing the first and second dissociations of oxalic acid. Calculate the value of the first dissociation constant K1, for oxalic acid if the value of the second dissociation
A man is dragging a trunk up the loading ramp of a mover's truck. The ramp has a slope angle of 20.0 degrees, Find the vertical component of the force
Calculate the distance NH3 gas and HCl gas would travel if a 100.0-cm tube were used, based on the accepted molar mass of the two gases
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0618 s, obtain the vertical components of the launch velocity
A solution containing 0.2 g/mL of a pure R enantiomer in a 1 dm polarimeter rotates plane polarized light by +3 degrees. What is the specific rotation of the R isomer. What will be the specific rota
A crate of weight W is being pushed across a horizontal surface by a force directed at an angle of 20 degrees below the horizontal. find the magnitude of the normal force on the crate
Given that vinegar is 5% acetic acid by weight, estimate the percentage of vinegar in the foods. Assume that vinegar is 1.05 g/ml.
what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time. Assume ideal behavior for all gases
A system undergoes a 2-step process. In the first step, the internal energy of the system increases by 228J when 166J of work is done on the system. What type of process is the overall process
When a 2.047-g sample that contains only carbon, hydrogen, and oxygen burns in excess O2, the products are 3.80 g CO2 and 1.04g H20. What is the empirical formula of this compound