Balance the following redox equation using the oxidation-number-change-method. describe each step that is involved correct oxidation numbers assigned correct balanced equation al(s) + pbso₄ - - > al₂(so₄)₃ + pb(s)

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

What provides structure to the human body?

0.09 moles of sodium sulfate in 12 ml of solution