The lewis structure of hcn contains
a.) one double bond and one single bond
b.) one triple bond and one single bond
c.) two single bonds
d.) two double bonds

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.

answer; 4 electrons;