Which of the following equations is correctly balanced? UO2(s)+4HF(l)→UF4(s)+H2O(l) NCl3(g)+3H2O(l)→NH3(g)+HClO(aq) 4NH3(g)+3O2(g)→2N2(g)+3H2O(g) 4PH3(g)+8O2(g)→P4O10(s)+6H2O(g)