What structure the a pig cow dog and orangutan have a. analogous structure
b. homologous structure
if not these please tell me the answer

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Name the element in group 17, period 2. (periodic table)

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90