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Question 1: The reaction A(aq) ---> B(aq) is a first order reaction with respect to A(aq). The concentration of A(aq) is reduced to 33.6 % of its initial value in 1.74 minutes. What is this reaction's half-life (in s)?
Question 2: The reaction A(aq) ---> B(aq) + C(aq) is a first order reaction. The half-life of A(aq) is 94.4 s at 25.0oC and its half-life is 73.4 s at 45.0oC. What is its half-life (in s) at 65.0oC?
Question 3: The half-life of 14C is 5730 years. A sample contains 92.4 % of the 14C that it would contain if it were still part of a living being. What is the age (in years) of this sample
A concave mirror in an amusement park has a radius of curvature of 4.0 m. A child stands in front of the mirror so that she appears 2.5 times taller than her actual height. how far is she standing from the mirror
Comet Halley moves about the Sun in an elliptical orbit with its closest approach to the Sun being about d1=0.59 AU, What is its speed when it is furthest away from the sun
The proper length of one spaceship is three times that of another. The two spaceships are traveling in the same direction, determine the speed of the faster spaceship
an induction roller coaster can accelerate a train from zero to 27m/s in 2.5 seconds. What is the average force exerted on a 68kg rider
Calculate the work done by 0.935 mol of an ideal gas when it expands isothermally from 225 bars to 1.71 bars at (a) 300 K and (b) 1000 K.
Find out the wavelengths of the light.
A piece of wood with a density of 730 kg/m3 is tied with a string to the bottom of a water-filled flask. What is the volume of the wood
A 9400 kg boxcar traveling at 16 m/s strikes a second boxcar at rest. The two sticktogether and move off with a speed of 8.0m/s. What is the mass of the second car
Illustrate what is the magnitude of the change in momentum of the ball while in contact with the bat if the ball leaves with a velocity of (a) 18 m/s, vertically downward, and (b) 18 m/s, horizontally back toward the pitcher?
Compute the components of the electric field at the point P shown in figure E2.9 with the y-direction upward and the z-direction out of the page. Suppose that the charge Q is uniformly distributed over the wire.
A large man sits on a four-legged chair with his feet off the floor. what pressure does each legexert on the floor
A thin spherical shell of mass 0.300 kg and diameter 0.190 m is filled with alcohol. It is then released from rest on the bottom of a pool of water. Find the acceleration of the alcohol filled shell as it rises toward the surface of the water.
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