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The combustion of 135mg of an unknown hydrocarbon produces 440mg of CO2 and 135mg of H2O. The molar mass of hydrocarbon is 270g/mol. determine the empirical and the molecular formulas of the hydroca
A bullet of mass mb = 16 g is fired with a speed of 260 m/s at a target that is a sheet of metal (mass mt = 410 g). what is the angular velocity of the target plus bullet just after the bullet hits
A coil of inductance 70 mH and unknown resistance and a 0.85 µF capacitor are connected in series with an alternating emf of frequency 980 Hz. what is the resistance of the coil
How many kilograms of a fertilizer made of pure P2O5 would be required to supply 1.86 kilogram of phosphorus to the soil
An oscillating LC circuit has a current amplitude of 8.00 mA, a potential amplitude of 250 mV, and a capacitance of 215 nF. What is the maximum energy stored in the capacitor
Does the type of fat used to make soap result in soap with different properties. What is the best choice of fat to use and why
An asteroid orbiting the Sun has a mass of 4.00Ã?1016 kg. At a particular instant, How far is the asteroid from the Sun
Write the balanced chemical equation that represents the addition of CL2 to CH3CH=CH2.
A swimming pool has dimensions 26.0 m â?? 9.0 m and a flat bottom. The pool is filled to a depth of 1.70 m with fresh water. What is the force exerted by the water on each side
What NaCl concentration results when 214 mL of an 0.680 M NaCl solution is mixed with 592 mL of a 0.230 M NaCl solution
A large man sits on a four-legged chair with his feet off the floor. The combined mass of the man and chair is 95.0 kg, what pressure does each leg exert on the floor
An insulated piston is compressing a perfect gas, suddenly the piston stops compressing the gas since there is no heat exchange to external environment, will the piston compress, expand, or stay the
A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. Find the horizontal and vertical forces the ground exerts on the base of the ladder
If a non-insulated metal piston is filled with perfect gas at 1 atm of presssure and room temp and the gas is compressed with 10atm, the gas initially heats up and then cools down.
A uniform beam of length L = 7.80 m and weight 3.95 102 N is carried by two workers, Determine the force that each person exerts on the beam
How many stereoisomers are possible for CH2Cl2 provided that the central carbon has a square planar geometry
An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 W
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over the course of one year
A planet has a mass of 5.69Ã?1026 kg. The planet is not a perfect sphere, instead it is somewhat flattened. What is the escape speed at the poles
Consider the reaction of aluminum chloride (AlCl3) with sulfuric acid (H2SO4):2AlCl3(aq) + 3H2SO4(aq) ? Al2(SO4)3(aq) + 6HCl(aq) (a) 2.67 g of aluminum chloride is reacted with 1.96 g of sulfuric aci
Write the names of the following compounds
The Hubble Space Telescope orbits the Earth at an altitude of approximately 612 km. Its mass is 11,100 kg, What is the Hubble's total energy
A 100.0 mL sample of cold water at 21.3 C was added to a 75.0 mL sample of hot water at 55.1 C. Calculate the temperature of the warm water mixture.
An electric device, which heats water by immersing a resistance wire in the water, What is the resistance of the heater wire
A pond with a flat bottom has a surface area of 730 m2 and a depth of 2.7 m. Find the rate at which energy is transferred by conduction from the surface to the bottom of the pond