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A 224-? and a 211-? resistor are connected in series across an unspecified power supply. what is the exact current (in A) through the 211-? resistor
Our reaction mixture had an oily layer layer on top when we added 3M sulfuric acid. what would cause this
A 0.50 sample of compound contains 0.40g of Carbon and .10g of Hydrogen. What is the empirical formula
A small coil has a cross section of 5.5 cm2 and consists of 8 turns of wire. If the loop carries a current of 180 mA, what is the torque required to hold the loop
A driver traveling at 72 km/hr sees an animal dash out onto the road and slams on the brakes. What was the driver's reaction time
Calculate the volume of 6m NaOH required to react completely with 1.50 g Methyl salicylate. How much of the 6M NaOH that was used was in excess of the theoretical amount? Used 15ml NaOH
The volume of a helium balloon is 75.4m^3 (or 7.54x10^L) at 20 degrees Celsius and 1.00 atm. (a) What is the mass of the helium gas in the balloon
What volume of 3M H2SO4 is needed to neutralize all of the disodium salicylate and the excess NaOH present after the initial reaction. How much sulfuric acid was in excess
calculate the volume of 6M NaOH required to react completely with 1.50g. How much of the 6M NaOH that you used was in excess of the theoretical amount
Three ships leave a spacestation at nearly the same time. As seen by a spacestation observer, Find the speed and direction of ships 2 and 3
Aluminum readily displaces hydrogen in sulfuric acid according the following balanced reaction: 2Al(s) + 3H2SO4(aq) = Al2(SO4)3(aq) + 3H2(g). How many grams of H2SO4 are required to completely consu
A pion has a rest energy of 135MeV. It decays into two gamma rays, bursts of electromagnetic radiation that travel at the speed of light. find the energies of the two gamma rays
can a reaction consist of both a single step bimolecular reaction and a unimolecular decompostion
what is the difference between using blue dye and red dye when determining the rate law for the oxidation by sodium hypochlorite?
How many milliliters of 4.00M H2SO4 are required to react with 1.60g of CuO according to the equation
What relationship can you infer about the directions of the electric field lines and equipotential lines, What is the potential of the conductor
A rifle is aimed horizonatally at a target 50 m away. The bullet hits the target 2.0cm below the aim point. what was the bullets speed as it left the barrel
Consider the earth following its nearly circular orbit (dashed curve) about the sun. find the size of the gravitational force acting on the earth
A cylindrical permanent magnet has a volume of 202 cm3 and a uniform magnetization of 1.0 106 A/m along its axis. Find the magnetic torque exerted on the magnet
A 4 ohm resistor and 10 ohm resistor are connected in series. how much current will flow through the circuit
Two parallel conductive plates of area 0.3m^2 hold equal but opposite charges of magnitude 30uC on either side. find the electric force acting on am electron between the plates
A 300-m-wide river flows due east at a uniform speed of 4.4 m/s. A boat with a speed of 7.6 m/s relative to the water leaves the south bank pointed in a direction 25o west of north. How long does it
At what position will the electrophilic aromatic substitution occur for the following compounds? bromobenzene, nitrobenzene, benzoic acid, toluene, phenol, and benzaldehyde
Many metals pack in cubic unit cells. The density of a metal and length of the unit cell can be used to determine the type for packing. For example, gold has a density of 19.32 g/cm3 and a unit cell
A and B are two species which react in the presence of an acid catalyst. Would you expect the catalyst to appear in the rate law