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What length of a cylindrical piece of tungsten wire having a radius of 3.71 mm has a mass of 61.3 g? The density of tungsten is 19.25 g/cm3.
A) 7.36 x 10-4 mB) 5.10 x 102 mC) 7.36 x 10-2 mD) 1.36 x 10-1 mE) 1.36 x 10-3 m
Describe the reactant and products of the chemical reaction. Was the reactant (potato chip) completely consumed? What evidence supports your answer?
Assume that a particular reaction evolves 250 kj of heat and that 34 kj of PV work is gained by the system. What is the enthalpy?
how I resolve it, A 1.25 gram sample of methane is container in a 850.0 mL flask at295.65 K.What is the pressure of this gas?
A precipitate again formed and was filtered off. Finally, the solution was treated with a sodium carbonate solution, which resulted in no precipitation. Which metal ions were definately present, which were definately absent, and which may or may n..
Ethylene epoxide (C2H4O) decomposes to form CH4 and CO. Small quantities of H2 and C3H6O are also formed. The following reaction mechanism has been proposed:
A 37.4-L volume of methane gas is heated from 22 degrees C to 78 degrees C at constant pressure. What is the final volume of the gas?
A 29.20 g piece of iron and a 25.30 g piece of gold at 100.0 degree C were dropped into 980.0 mL of water at 15.65 degree C. The molar heat capcities of iron and gold are 25.19 J/(mol degree C) and 25.41 J/(mol degree C), respectively.
At equilibrium, it is found that .25 moles of COCl2 remain. What is the equilibrium concentration of CO?
what is the concentration in the solution of the first ion when the second one starts to precipitate at 25 C?
The most common source of copper is the mineral chalcopyrite (CuFeS2) how many kilograms of chalcopyrite must be mined to obtain a 440 grams of pure copper.
Calculate the equilibrium constant, K, for this reaction at 298 K. (b) Will Delta G increase, decrease, or stay the same if the partial pressure of NO2 is increased? (c) Calculate Delta G^o at 298K if the partial pressure of NO2 and N2O4 are 0.40 atm..
Consider a 2710-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car? in mph
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