Chemistry - Mole Concept Question with Solution | TestHub

A quantity of 1 g dry green algae absorbs $5.0\times 10^{-3}$ moles of ${\mathrm{CO}}_2$ per hour by photosynthesis. If the carbon atoms were all stored after photosynthesis as starch ${\left({\mathrm{C}}_6{\mathrm{H}}_{10}{\mathrm{O}}_5\right)}_{\mathrm{n}}$, then how long (in hours) would it take for algae to increase its own weight by $81\%$, assuming that photosynthesis taking place at a constant rate?