4. Answer
Question 8 (1 point) ✓ Saved
Water can be formed in the following reaction: 2H2 + O2 --> 2H20 If you have 2
moles of Hydrogen gas (Hz), how many moles of water can you form? (Assume you
have an excessive amount of Oxygen gas) (Enter just the number, not the number
and units)
Your
12
Answer

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?