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When a suspected drunk driver blows 188 mL of his breath through the fuel-cell breathalyzer, the breathalyzer produces an average of 324 mA of current for 10s.
The highest barrier that a projectile can clear is 13.5 m, when the projectile is launched at an angle of 15.0 degrees above the horizontal. What is the projectiles launch speed?
A positive charge of 4.40 uC is fixed in place. From a distance of 3.00 cm a particle of mass 6.70 g and charge +3.20 uC is fired with an initial speed of 80.0 m/s directly toward the fixed charge.
Calculate the Molar Mass of vitamin C where a solution contains 55.0 g of vitamin C dissolved 25.0 g of water. The solution freezes at -2.34 degrees Celsius.
Suppose you decide to define your own temperature scale using the freezing point (-11.5 C) and boiling point (197.6 C) of ethylene glycol.
A small map shows New York to be 486 miles in a direction 8° north of east from Columbus. The same map shows that Buffalo is 302 miles in a direction 56° west of north from New York. Assume
The heat of combustion for a sample of coal is 23.0 kJ/g. How many grams of coal must be burned to heat 220.0 g of water from 20 degrees C to 75 C? The specific heat capacity of water is 4.184 J g-1
A diffraction grating is illuminated with light if wavelength 500nm. It produces the first minimum at 45 degree. Find the number of lines(slits) per mm of diffraction grating.
What is the ground state electron configuration of Mercury, Hg? Is Mercury expected to be paramagnetic or diamagnetic? Explain Why.
Look up the definition of diopter and use it to calculate the power of the converging lens you used in this experiment. What kind of visual problems can be helped with converging lenses?
An aqueous solution with an added unknown compound has a boiling point of 106 C. Glucose was added to the solution and the boiling point was reduced to 102 C. Calculate the Van't Hoff Factor of the
The total liftoff mass of the space shuttle orbiter is 110,00kg. The combined thrust of the three on board liquid fuel engines and two solid fuel boosters is 34.5 million N. Theoretically what is th
One mole of N2 and three moles of H2 are placed in a flask at 375 C. Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is 0.21. The Kp for the reaction is 4.31*1
If the coefficient of volume expansion of mercury is = 1.80×10-4 , compute, the coefficient of volume expansion of the glass.
write an expression for the net electric flux through the entire surface area in terms of the area vectors and the electric field. (Hint: use the vector definition for the electric flux found in tut
(a) How far beyond the traffic signal will the automobile overtake the truck? (b) How fast will the automobile be traveling at that instant?
An advertisement claims that a particular automobile can "stop on a dime". What net force would actually be necessary to stop an automobile of mass 910kg traveling initially at a speed of 37.0km/h i
A constant horizontal force of 20N is applied to block A (4.0kg) which is pushed against block B (6.0kg). The blocks slide over a surface, along the x-axis. What is the force from block A on block
Two 20.0 mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, were titrated with 0.100 M HI. What is the volume of added acid at the equivalence point for each titration?
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively.
A car has an efficiency of 15 miles per gallon of gasoline where molecular formula of the gasoline is c8H18 and the heat released during combustion of the gasoline is -249.9KJ/mole. weight of one ga
An aqueous solution is 36% by mass silver nitrate, AgNO3, and has a density of 1.41 g/mL. What is the molality of silver nitrate in the solution?
In an air-conditioned room at 19.0 C, a spherical balloon had the diameter of 50.0 cm. When taken outside on a hot summer day, the balloon expanded to 51.0 cm in diameter. What was the temperature
You chose a an arbitary point to begin measuring the postion of the falling object. How fast was it going at the point you designated t=0?
7.321 mg of an organic compound containing carbon, hydrogen, and oxygen was analyzed by combustion. The amount of carbon dioxide produced was 0.2503 g and the amount of water produced was 0.1025 g.