In the reaction 2h2 + o2 → 2h2o, what coefficient should be placed in front of o2 to balance the reaction? a) 1 b) 2 c) 3 d) no coefficient is needed

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What is the mass of phosphorous in a 51-kg person

Which substance—wood or silver—is the better thermal conductor? a thermal conductor is a material that requires very little heat energy to change its temperature. explain your answer.