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A novice skier, starting from rest, slides down a frictionless 36.0 incline whose vertical height is 220m. How fast is she going when she reaches the bottom?
Calculate the value of Kp at each temperature and discuss the results is the decomposition of CO2 an antidote for global warming
The volume of a sample of a gas collected over water at 32.0 degrees Celsius and 752 Torr is 627 ml. What will the volume of the gas be when dried and measured at STP?
Sodium hydroxide (NaOH) has a lattice energy of -887 kJ/mol and a heat of hydration of -932 kJ/mol. How much solution could be heated to boiling by the heat evolved by the dissolution of 23.0g of N
The second person, on the opposite side of the lock, pulls at an angle of 45o. With what force should the second person pull so that the net force on the raft is in the forward direction?
It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13.0c to 24.3. What is the specific heat for the metal? Express your answer numerically, in J/g.C
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness?
Find the volume of methane measured at 298K and 0.940atm required to convert 1.47L of water at 298K to water vapor at 373K.
A uniform circular plate of radius 2R has a circular hole of radius R cut out of it. the center C' of the smaller circle is a distance .80R from the center C of the larger circle. what is the posit
Calculate the density of sulfur hexafluoride gas at 723 torr and 27°C
Nitrogen gas react with hydrogen gas to form ammonia, if 14.01 g sample of N2 react with 4.07g of H2, how many of ammonia is formed?
A 82 kg water skier floating in a lake is pulled from rest to a speed of 13 m/s in a distance of 25 m. What is the net force exerted on the skier, assuming his acceleration is constant?
Explain what will happen to the precision of the orders and rate constant (higher/lower), and the difference in the activation energies if:
Calculate the value of deta S when 1.85 mol CH3OH (l) of is vaporized at 64.7 C. The normal boiling point of methanol is 64.7 C, and its molar enthalpy of vaporization is delta H = 71.8 KJ/mol.
chlorine gas reacts with silica SiO2, and carbon to give silicon tetrachloride and carbon monoxide. How much CO gas can be produced from 15.0g of silica?
A grocery cart is pushed along an aisle by a shopper who exerts a constant horizontal force of . The acceleration of gravity is . If all frictional forces are neglected and the cart starts from rest
What is the molar concentration of a 1 Liter solution of HCl that has 65 grams of HCl in it?
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected?
What is the pH of the solution after the addition of 5.00 mL of 0.10M NaOH to 50.0 mL of buffer solution? Ka of CH3CH2COOH = 1.4 10-5.
Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction.
What mass of Fe will form when 63.0g of CO reacts with 145g of Fe2O3 according to the following equation? 3CO+Fe2O3->2Fe+3CO2. Which is the limiting reactant?
The truck is to curve off the road, jump across a gully, and land on the other side 2.96 m below and 10 m away. What is the minimum centripetal acceleration the truck must have going around the circ
A 20.00mL sample of H3Y was titrated with 0.1000 M NaOH. The first equivalence point was reached after the addition of 14.98mL of base. The second equivalence point was reached after the addition o
Calculate the molar concentration of uncomplexed Zn2+ in a solution that contains 0.20 mole of Zn(NH3)42+ per liter and 0.0116 M NH3 at equilibrium?
The charges of Hydrogens are +0.5e and Oxygen is -1.0e, where e = proton charge. Hint: you will have to use your trig to figure out the Cartesian locations of the atoms, and then use vector addition