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A parallel-plate capacitor with area 0.900 m2 and plate separation of 4.00 mm is connected to a 18.00-V battery. Find the magnitude of the charge density on each plate
Use a degree-of-freedom analysis based on extents of reaction to determine how many process variables must be specified for the remaining variable values to be calculated.
A hot air balloon is rising upward with a constant speed of 5 m/s. How high above the ground is the balloon when the compass hits the ground
Some species with two oxygen atoms only are the oxygen molecule, O2, the peroxide ion, O2-2 , the superoxide ion, O2-1 , and the dioxygenyl ion, O2+1 . Draw an MO diagram for each, rank them in orde
A fast train has a speed of 111 km/hr. Because its wheels have a limited grip to the railway, what speed must the train mantain to keep the acceleration at the limit
what is the maximum number of grams you could obtain if you recrystallize 28 g of cholesterol from 100 mL of methanol
A carbon dioxide laser is an infrared laser. A CO2 laser with a cavity length of 53.00 cm oscillates in the m=100,000 mode. What is the wavelength of the laser beam
What volume (in mL) of 25.0 M hydrochloric acid is required to prepare the volume of 17.0 M hydrochloric acid you found you needed in A to neutralize 4.0 grams of aluminum (III) hydroxide
An uncharged capacitor is connected to the terminals of a 3.0 battery, and 12 flows to the positive plate. How much additional charge flows to the positive plate
Use the ideal gas equation of state to estimate the molar volume in m3/mol and the density of ari in kg/m3 at 40 C and a gauge pressure of 3.0 atm.
calcualte the precentage error that would result from the use of the ideal gas equation of state for the calculation.
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes
A biochemist studying the break down of insecticide DDT finds that it decomposes by a first-order reaction w/ a half-life of 12 years. How long does it take DDT in the soil sample to decompose from
A 2.80-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.10 m down the incline in 1.20 s. Find the magnitude of the acceleration of the block.
The following reaction was monitored by measuring the partial pressure of oxygen. The pressure was measured at 25 degrees Celsius.
A proton (1e) and an alpha particle charge = 2e, mass = 6.64 x10^-27 kg are initially at rest, separated by 4.00 x 10^-15 m. Find the speeds of the proton and alpha particle
A playground is on the flat roof of a city school, 5.9 m above the street below (see figure). The vertical wall of the building is h = 7.40 m high, Find the speed at which the ball was launched
Perform the calculatons for the extraciton of 100 mg of P in 300mL of water with three 100-mL portions of ether. assume the partition coefficient is 3.5
A major motor company displays a die-cast model of its first automobile, made from 6.60 kg of iron. What mass of gold is needed to make the new model
How many atoms of hydrogen are in 1 molecule of water, H2O
An airplane has a mass of 28,000 kg and takes off under the influence of a constant net force of 44,000 N
Consider the reaction A -> B the rate of the reaction is 1.6 x 10^-2 m/s when the concentration of A is 0.35 M. Calculate the rate constant if the reaction is first order in A.
A 12-V battery causes a current of 0.85A through a resistor. How many joules of energy does the battery lose in a minute
We add some solid silver chromate (Ag2CrO4, Ksp = 1.100x10-12) to a solution of 1.2202 M Li2CrO4. After equilibrium is achieved, what is the pAg (=-log[Ag+]) of this solution
The average speed of a nitrogen molecule in air is about 6.70 * 10^2 m/s, and its mass is about 4.68 * 10^-26 kg. What average force does the molecule exert on the wall