3. In which reaction is the volume of the products equal to the volume of the reactants?
A 2H2(g) + O2(g) → 2H2O(g)
B 3H2(g) + N2(g) → 2NH3(g)
C N2(g) + O2(g) → 2NO(g)
D 2502(g) + O2(g) → 2503(g)

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

The clouds are grey and ground is wet. a quantitative b qualitative

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion