Space vehicles use solid lithium hydroxide to remove exhaled carbon dioxide according to the equation: #2LiOH+CO_2 ->Li_2CO_3+H_2O#. What is the mass of carbon dioxide removed if the space vehicle carries 42.0 mol #LiOH#?

1 Answer
anor277
Jan 28, 2016

The reaction stoichiometry clearly indicates that #21.0# #"mol"# #CO_2# can be removed. This represents approx. #1# #kg# of carbon dioxide.

Explanation:

From the reaction clearly 2 moles of lithium salt are required for the removal of 1 mole of carbon dioxide gas. Of course this molar quantity represents a precise mass.

Mass of carbon dioxide removed: #=# #21*cancel(mol)xx44.0*g*cancel(mol^-1)# #=# #??# #g#

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