A natural gas composed of mostly methane flows through a 0.9144-m ID pipe at a velocity of 34.0909 m/hr at 5.5158 MPa and 60 degrees F( density of the gas at this condition is 2.576 lb/ft^3). The gas then goes through a contraction in a 0.6096-m ID pipe at 3.4474 MPa and 60 degrees F. Find the A.) velocity of the gas at the 0.6096-mID pipe and B.) mass flowrate of the gas through the 0.9144-m ID pipe?