The fizz produced when an Alka$-$Seltzer ${?}^2$ tablet is dissolved in water is due to the reaction between sodium bicarbonate $(NaHC{O}_3)$ and citric acid $(H_3{C}_6{H}_5{O}_7)$ : $3NaHC{O}_3(aq)+H_3{C}_6{H}_5{O}_7(aq)3C{O}_2(g)+3H_{2}O(l)+N{a}_3{C}_6{H}_5{O}_7(aq)$ In a certain experiment $1\mathrm{.}35g$ of sodium bicarbonate and $1\mathrm{.}35g$ of citric acid are allowed to react.

Part B

How many grams of carbon dioxide form?

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Part C

How many grams of the excess reactant remain after the limiting reactant is completely consumed?

Express your answer using two significant figures.

$m=$

g