How many grams of hydrochloric acid will react completely with a block of tin that is 2.5 cm by 3.0 cm by 3.5 cm, if the density of tin is 7.31 g/ml? show all steps of your calculation as well as the final answer.

sn + hcl → sncl2 + h2

Let d = m / V 
m = Vd = (2.5 x 3.0 x 3.5)cm³ x 7.31 g/cm³ 
m = 191.9 g  this is the mass of tin

the balanced chemical equation  is . 
Sn(s) + 2HCl(aq) --> SnCl2(aq) + H2(g) 
191.9g.    .m=.?g 
so it is 
191.9g Sn x (1 mol Sn / 118.7 g Sn) x (2 mol HCl / 1 mol Sn) x (36.5 g HCl / 1 mol HCl) = 120g HCl 
the mass of HCl =120g

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