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Lindane, a powerful insecticide, is a member of this group. The molar mass of lindane is 290.8. How many atoms of carbon does a molecule of lindane contain?
A buffer was prepared by adding 2.4 g of ammonium nitrate to 100.0 mL of 0.30 M ammonia (Kb = 1.8 × 10-5). To this solution was then added 10.0 mL of 0.30 M sodium hydroxide, what is the pH
Two, 2cm X 2cm plates that form a parallel capacitor are charged to + 0.708 nC. What are the electric field strength inside and the potential difference across the capacitor if the spacing between t
A 1.5 V power supply is connected to a parallel plate capacitor, each plate is 4 cm in diameter and spaced 2 mm apart. How much charge can the capacitor move from one plate to the other?
During a structure fire, the pump runs for 30 minutes. How many pounds of water are used to extinguish the fire? The density of water is 1.0 grams per milliliter.
The electric potential at a point that is halfway between two identical charged particles is 300 V. What is the potential at a point 25% of the way from one particle to the other?
What is the remaining Ag+ ion concentration and is precipitation complete? The solubility product constant of AgBr is 5.0 × 10-13.
A transformer with a turns ratio (secondary/primary) of 1:14 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit. What is the voltage supplied to the re
Assuming 91% efficiency for conversion of potential to electrical energy, and 8% loss of the resulting power in transmission, what is the mass flowrate of water required to power a 200-watt light
If your path difference is 1/8 of the wavelength, will this result in constructive or destructive interference? Please show mathematically and explain.
What voltage appears across the primary coil of this transformer if 140V is applied to the secondary coil?
A gas has the equation of state PV=RT+a(T)P. Show that for a reversible expansion between T1 and T2 at constant pressure P, the work done is.
A dinoflagellate takes 5.2 s to travel 0.6 mm. Approximate a dinoflagellate as a sphere of radius 35.0 µm. What is the power output of the flagellate?
A 15 kg flywheel has all its mass around its outer rim. A string is wrapped around it and a m = 3.7 kg weight is hanging on the string. The flywheel has radius R = 0.25 m. When the 3.7 kg weight is
A rod is pulled along a rail by a constant external force. The length of the rod b/t the rails is 38cm. The magnetic field point upward b/t the rails has a constant value 0.885T. The circuit has res
The final temperature was 27.1oC exactly. The specific heat capacity of water is Cp=4.1855 J/g oC. What is the specific heat capacity of the solid?
If a negative was introduced and moved from a positive equipotential line toward a negative equipotential line, would the work be positive or negative? Explain please.
Question: A small sphere with a mass of 0.002g and carrying a charge of 5*10^-8C hangs froma thread near a very large, charged conducting sheet. The charge density on the sheet is 2.5*10^-9C/m^2. FI
One point-like charge of -20 nC is placed 3 cm away from a very large planar sheet of charge. The surface charge density is constant and has the value of +20 nC/cm^2 (a) Give the electric force exer
A buffer solution contains 0.17 mol of propionic acid and 0.24 mol of sodium propionate in 1.50 L. What is the pH of the buffer after the addition of 0.01 mol of HI?
A 900-kg car is moving at 33.3 m/s. A braking force of -7548 N is applied for 2.70 s. What is the velocity of the car when the brakes are released?
A helicopter lifts a 70 kg astronaut 16 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. (a) How much work is done on the astronaut by the force from the h
A typical amount would be 7.6 * 10^(-5) of Kl per gram of NaCl. What is the concentration of potassium iodide in terms of part per million (ppm)?
A wire carries a current of 0.616 A. This wire makes an angle of 56.7° with respect to a magnetic field of magnitude 4.63E-5 T. The wire experiences a magnetic force of magnitude 7.17E-5 N. What
Explain the changes in acceleration, velocity, and net acceleration Of a man jumping off a plane in a parachute. Describe the changes with valid scientific principles.