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Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 100 degree angle to each other--a 5.8 kg piece at 29.2 m/s and a 3.8 kg piece a
Charges of 4.0 micro coulomb and -6.0 micro coulomb are placed at two corners of an equilateral triangle with sides of 0.10 m. At the third corner, what is the electric field magnitude created by th
How many grams per liter of sodium acetate would need to be dissolved to produce a pH of 8.00 in a hydrolosis reaction between the acetate ion and water?
Four point charges are on the rim of a circle radius 10cm. The charges are in micro coulomb +0.50, +1.5, -1.0, -0.50. If the electrical potential at the circle's center due to the +0.5 charge alone
Oxalic acid(C2H2O4) is generally used as ableaching and cleansing agent. Calculate concentration of all thespecies present at equilibrium in a 0.10M solution.
The position of a particle is given by the expression x = 2.00 cos (2.00πt + 2π/5), where x is in meters and t is in seconds. a) Determine the frequency b) determine the period of motion
If you heat 100g of calcium carbonate what mass of carbondioxide should be produced? If you only collect 38.5 g of carbondioxide gas, what is the percent yield of your reaction?
In a 100 ml sample of a buffer solution, the propanic acidconcentration is 0.50 molar and the sodium propanoate concentrationis .50 molar. To this buffer solution, 0.0040 mole of solidNaOH is added.
Three enemy spacecraft have been causing trouble in the asteroid belt. They always travel in a line, evenly spaced apart, attempting to chase down local spacecraft to steal their goods.
If a lightning strike can be approximated by considering a cloud and the Earth as a parallel plate capacitor, A) find the capacitance of such a system if the cloud's dimensions are 8 km by 9 km, at a
There are 2 charges (3.5 microcoulmb and 5.2micro coulomb ) located at (-4 cm, 0) and (4 cm, 0), respectively. A) Determine the electric potential at (8 cm, 0).
How could the addition of a non-solvent species not participatingin equilibrium indirectly affect the position of that equilibrium?
What is ?H° of the reaction done experimentally usingfurfuryl alcohol, anhydrous carbon tetrachloride andtriphenyl phosphine to form furfuryl chloride? Is the reaction endothermic or exothermic
Consider the following observation: A rubber band isstretched under tension (at least 0.5 cm wide) and then touched tothe upper lip and found to be warm.
Falling from the suface of the earth through its center to the other surface of the other side. 1 How many hrs will it take to reach the center? 2. How fast m/s will i be going. 3. How fast when i g
A 16 ounce speciality coffee drink contains 254 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount ofwater, what is the pH of the solution?
If the distance separates oscillators which differ in phase by 2pie radians, what is the phase difference between two oscillators a distance x apart?
How many grams of methane CH4g must be combusted to heat 1.02 kg ofwater from 25.0C to 75.0C assuming H2Ol as a product and 100 efficiency in heat transfer?
A 5 m glass rod and lead rod bothn at 15° C. The lead rod is heated to 55° C. To what temperature must the glass rod be heated so that they are again at the same length?
A calorimeter, fabricated from 135.0 g of iron metal, thermallyinsulated from its surroundings, contains 173.0 g of water. Both the calorimeter and the water are at an initial temperature of21.25&de
Two equally charged particles are held 3.2*10^-3m apart and then released from rest. The initial acceleration of the first particle is observed to be 7m/s^2 and that of the second to be 9m/s^2. If t
Many common weak bases are derivatives of , where one or more of the hydrogen atoms have been replaced by another substituent. Such reactions can be generically symbolized as where is the base and i
A ball is thrown straight upward and rises to a maximum height of 12.0m above its launch point. At what height above its launch point has the speed of the mall decrease to one half of its initial va
A wire of mass 5.00 grams and length 1.20 m is stretched with a tension of 36.0 N. Waves of frequency 50.0 Hz and amplitude 1.6 mm are traveling along the wire. What is the average power carried by
Given pKa of dichloroacetic acid and trichloroacetic acid are 1.3 and .6. How many moles of trichloroacetic acid will be formed starting with 1.0 mole of dichloroacetic acid and 0.50 mole of the co