Technician a says that the hvac doors in an automatic system are vacuum-operated. technician b says that the hvac doors in an automatic system are operated by electric servos. who is correct?
a. technician b
b. neither technicians a nor b
c. technician a
d. both technicians a and b

How would you reduce the volume of gas

How many moles of gas are present if p=11 atm, v=12l, t=185k?

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