Which of the following is the correct equation for the reaction below? One molecule of propane gas reacts with five molecules of oxygen gas to
form three molecules of carbon-dioxide gas and four molecules of water
vapor.
A. C3H8 (9) + 50 (g) → 3C0 (g) + 4H20 (9)
B. CH (g) + 502 (g) → 3C02 (g) + 4H0 (9)
C. C3H8 (s) + 502 (s)
3CO2 (s) + 4H20 (s)
D. C3H8 (9) + 502 (9)
3CO2 (g) + 4H20 (g)

Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.