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A gas sample has a voulume of 4250 ml at 15 degree celcius and 745mmHg. What is the new container with a voulume of 2.50 L and a pressure of 1.20 atm
Calculate the eccentricity, e, of a planet's orbit around a central star if the ratio of its gravitational potential energies at the aphelion and at the perihelion is ? = 0.175
A rational expression is a fraction of two polynomials. If you need to add or subtract two rational expressions, how would you do it?
If 153 mL of wet H2 is collected over water at 24°C and a barometric pressure of 725 torr, how many grams of Zn have been consumed
Point charges of 30.0 µC and 50.0 µC are placed 0.500 m apart. What is the magnitude and direction of the electric field halfway between them
Rank the relative nucleophilicity of the indicated species in ethanol. CH3OH CH3S- CH3COOH CH3O- CH3COO-
Calculate the equilibrium constant at 40 K for a reaction with ?Ho = 10 kJ and ?So = 100 J/K.
A web page designer creates an animation in which a dot on a computer screen has a position of r? =[ 4.2cm +( 2.3cm/s2 )t2]i^+( 4.5cm/s )tj^
A certain indicator, HA, has a Ka value of 0.000040. The protonated form of the indicator is yellow and the ionized form is red. What is the pKa of the indicator
The fastest measured pitched baseball left the pitcher's hand at a speed of 42.0m/s. what acceleration did he give the ball
Two particles are fixed to an x axis: particle 1 of charge -4.18 × 10-7 C is at the origin and particle 2 of charge +4.18 × 10-7 C is at x2 = 13.9 cm. what is the magnitude of the net el
Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 5.04 10-6 kg. Determine the charge magnitude
A "rocket car" is launched along a long straight track at t = 0 s. It moves with constant acceleration a1 = 1.2m/s2. At what time does the second car catch up with the first one
What is the solubility of M(OH)2 in pure water. B. What is the solubility of M(OH)2 in a .202 M solution of M(NO3)2? Ksp=5.45E-18
a spring of stiffiness k supports a box of mass M in which is placed a blokk of mass m. find the force of reaction between the blook and the box
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe
When jumping, a flea reaches a takeoff speed of 1.0m/s over a distance of 0.48mm. how high would he go
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.560 moles of
A container of gas with an adjustable volume has an initial pressure of p. The container volume is tripled at constant temperature. What is the pressure inside the container after the volume is incr
Suppose that 2.0mol H2 at 2.0atm and 25C and 4.0mol N2 at 3.0atm and 25C are mixed at constant volume. Calculate delta mix G. Also, what would be the value of delta mix G had the pressures been iden
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
What three events occur during the light reactions of photosynthesis. A. Reduction of oxygen, oxidation of NADPH, formation of ATP B. Oxidation of water, reduction of NADP+
In the intermembrane space, attached to the inner mitochondrial membrane. C. In the intermembrane space, attached to the outer mitochondrial membrane D. On the cytosolic side of the outer mitochond
A mitochondrion is producing ATP at a constant rate and, then, a chemical uncoupler is added. Compared to before the uncoupler was added
While running a marathon, a long-distance runner uses a stopwatch to time herself over a distance of 100. How long will it take her to run a mile at this speed