The balanced equation for Kc = [H+]2 [CO3-2] / [H2CO3] is a. H2CO3 (aq) 2H+ (aq) + CO3-2(aq)
b. 2H2CO3 (aq) 2H+ (aq) + 2CO3-2(aq)
c. H2CO3 (s) 2H+(l) + CO3-2(g)
d. H2CO3 (g) 2H+(aq) + CO3-2(l)

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

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %