What is percentage content of carbon by mass in #Ca(HCO_3)_2#? Chemistry The Mole Concept Percent Composition 1 Answer anor277 Oct 24, 2016 #%C~=15%# Explanation: #%C="Mass of carbon"/("Mass of "Ca(HCO_3)_2# #=# #(24.02*g*mol^-1)/(162.11*g*mol^-1)xx100%# #=# #??%# Answer link Related questions What is mole percent? Question #e2e8b Question #bc737 Question #bc73b Question #e2e8f Question #b9857 Question #b985b Question #fee41 Question #c5c01 Question #bc73f See all questions in Percent Composition Impact of this question 14757 views around the world You can reuse this answer Creative Commons License