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A solid uniform disk of mass M = 9 kg and radius R = 29 cm rests with its flat surface on a frictionless table, What is the total kinetic energy of the disk
Write a balanced half-reaction describing the oxidation of gaseous dihydrogen to aqueous hydrogen cations.
Calculate the concentrations of total acetate ion for the 7 solutions below, prepared by mixing the specified volumes of .75 M acetic acid with .75 M sodium acetate
On a winter day heat leaks out of a house at the rate of 2.5x10^4 kcal/h. At what rate does this process produce entropy
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy inste
A uniform circular metal disk has radius 36 cm and mass 350 g and its center is at the origin. Then a circular hole of radius 9 cm is cut out of it. What is the total linear acceleration of a piece
A new soft-drink on the market is prominently labeled as "caffeine-free". Based on the nature of complaints filed by several consumers, it appears that the "caffeine-free" claim might actually be f
A white powdery solid, and asked to evaluate its purity and to determine whether it might be identical to a given sample of an illegal drug, a white crystalline solid. Clearly explain what you would
A rope is used to pull a block a horizontal distance of 50 metres. If the rope tension is 120 N, What is the work done on the box
Use enthalpy of formation data to calculate the number of moles of CO2(g) produced per megajoule of heat released from the combustion of each fuel under standard conditions
Identify the relative molar amounts of the species in 0.10 M NaBr(aq). If equal, place the species in the same box. H2O OH- H30+ Br- Na+ NaBr
An electromagnet produces a magnetic field of 0.540T in a cylindrical region of radius 2.70cm between its poles. What magnitude of force is exerted on the wire
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.088 M in NH4Cl
A certain weak base has a Kb of 7.30 × 10-7. What concentration of this base will produce a pH of 10.07
Enough of a monoprotic acid is dissolved in water to produce a 1.54 M solution. The pH of the resulting solution is 2.95. Calculate the Ka for the acid.
.80g of hydrogen chloride () is dissolved in water to make 4.5L of solution. What is the pH of the resulting hydrochloric acid solution
what volume is occupied by 1.00kg of oxygen gas at 5.00 degrees Celsius at a pressure of 735 torr
A baseball is 150g and thrown at 100miles/hour with the same uncertainity. Determine the uncertainity in its position. The uncertainity was set at 1% in the previous problem not sure if it matters
A 7.80-g bullet moving at 640 m/s penetrates a tree trunk to a depth of 6.1 cm. find the average frictional force that stops the bullet
You plan to marinate a piece of beef for your dinner. The beef is 5 by 6 inches with the thickness of 1 inch. You rub salt and pepper all around it, and set it aside for 30 minutes. Then you checked
A mass-spring system oscillates with an amplitude of 4.40 cm. If the spring constant is 237 N/m and the mass is 411 g, Determine the maximum speed of the object
A car goes around a curve on a road that is banked at an angle of 35.0^\circ. What is radius of curve
A buffer solution is made by making a 100 mL aqueous solution containing 2.6 grams of citric acid (C6H8O7) and 6.4 grams of potassium citrate (C6H7O7K). What is the pH of this buffer solution
A bowling ball is rolled off a flat top building w/ an initial speed of 5.8m/s. It lands 24.2 meters from base of the building. how tall is the building
Which salt would make an acidic solution when dissolved in water a. rubidium diiodide b. aluminum tribromide c. potassion fluoride d. calcium sulfate Which would produce a basic solution in water