What is the molecule geometry of a abe3 molecule?

a. linear
b. trigonal bipyramidal
c. trigonal planar
d. tetrahedral

Iknow #2 is d. i just need to know why

What is the molar mass of a gas that has density of 2.054 g/l

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon