1. A 1500kg car is being lifted by a hydraulic jack attached to a flat plate. Underneath the plate is a pipe with radius 24cm.

a) If there is no net force on the car, calculate the pressure in the pipe.

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?