Calculate the enthalpy change for the reaction P4O6(s)+2O2(g)→P4O10(s)P4O6(s)+2O2( g)→P4O10(s) given the following enthalpies of reaction: P4(s)+3O2(g)→P4O6(s)ΔH=−1640.1kJP4( s)+3O2(g)→P4O6(s)ΔH=−1640.1kJ P4(s)+5O2(g)→P4O10(s)ΔH=−2940.1kJ

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Stage in which a star’s outer layers have started to cool and grow outward?