A sample of gas contains 0.1700 mol of H2(g) and 8.500E-2 mol of O2(g) and occupies a volume of 15.5 L. The following reaction takes place: 2 H2(g) O2(g) 2 H2O(g) Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant.

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.