Where would you find atoms with 2 valence electrons?

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

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume