a 10.0 l flask is used to collect 0.500 moles of n2 and 0.180 moles of o2 over water at 30°c. what is the pressure in the flask? (vapor pressure h2o(l) = 31.8 mm hg)
(need answer by tomorrow afternoon)

What happens to energy in an open system?

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.

If an atom has 12 protons and 13 neutrons