Aphoton has a wavelength of 6.2 meters. calculate the energy of the photon in joules. (planck's constant is 6.626 × 10-34 joule seconds, the speed of light is 2.998 × 108 m/s)

What is the percent by mass of oxygen in fe2o3

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.