Look at the lewis structures of the following molecules and predict their 3-d shapes according to the vsepr theory. part a silane (sih4)

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.