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The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2, The potential on the outer surface of the membrane is +52.2 mV greater than that on the inside surface.
The molar heat capacity of gaseous hexane (C6H14) at 25 degrees celcius is 142.6 J/(mol*degrees celcius). What is the specific heat
An aircraft with a mass of 856 kg accelerates from 0 to 83 m/s in 9 seconds, at which time the aircraft launches. What is the kinetic energy of the aircraft
Joseph Priestley prepared oxygen by heating mercury(II) oxide. The compound HgO is stable at room temperature but decomposes into its elements (Hg and O2) at high temperatures. What conclusions can
Two point charges Q1 = 3.6 µC and Q2 = 8.0 µC are initially very far apart. They are then brought together, How much work does it take to bring them together
The nucleus of a helium atom contains two protons. In a simple model of this nucleus, What is the electric potential energy of the two protons
A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6m/s )x, find the work the rope does on the bicycle
Two point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges
Given the following at 25°C and 1.00 atm: 1/2N2(g) + O2(g) ® NO2(g)DH0 = 33.2 kJ N2(g) + 2O2(g) ® N2O4(g)DH0 = 11.1 kJ Calculate the DH0 for the reaction below at 25°C. 2NO2(g) ®
Suppose both skaters are initially moving v, but one has mass m and the other 2m. What point do they rotate about after they meet? What is the linear velocity of this point? What is the angular velo
The following reaction is spontaneous only below 3000 K. What conclusions can be drawn regarding this reaction? A + B ® AB
A 350-kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop, How fast is this roller coaster moving at point B
Mass of isopentyl acetate formed at equilibrium is 126.68. Q: how much isopentyl acetate lost from theoretical yield by incomplete equilibrium.
Charged particles round a 1.7 km radius circular particle accelerator at nearly the speed of light. Find the centripetal acceleration of the charged particles
In a scientific test conducted in Arizona, a special cannon called HARP shot a projectile straight up to an altitude of 180.0 km. if the projectiles initial speed was 3.00 km/s, how long did it take
Estimate the electron drift velocity. Estimate the current density. Estimate the electric field in the wire.
How much heat would be released if 12.0 g of methane, CH4, was completely burned in oxygen to form carbon dioxide and water at standard state conditions
A spaceship is visiting Planet X. While descending to the surface, its rockets produce 25 kN of upward thrust and the spaceship's speed decreases at a rate of 0.15 m/s2. What is the mass of the spac
External forces compress 21 mol of ideal monatomic gas; during the process the gas transfers 15 kJ of heat to its surroundings, How much work was done on the gas
For which set of values of DH and DS will a reaction be spontaneous (product-favored) at all temperatures
Assuming that the total energy consumption scales in the same way as BMR, how many Calories are needed by the person weighing 150 lb
An object of heat capacity 100 cal/°C is initially at 30°C. Estimate the resulting entropy change of the universe
Does 4-Phenylphenol have a monosubstituted aromatic ring ( or also known as monosubstituted aromatic overtone band [msoab] )
A process occurs spontaneously and DSsystem < 0. Which statement below must be true?DSsurroundings > 0DSuniverse > 0The pressure is constant.Both (a) and (b) are correct.All of these answer
Given a barometric pressure of 756.0{rm mmHg} , calculate the pressure of gas sample (a) as indicated by the manometer