Lithium hydroxide crystals are used in manned space vehicles to remove carbon dioxide gas from the air exhaled by the astronauts. The symbolic equation for this reaction is 2LiOH + CO2 → Li2CO3 + H2O a. The formula and charge of a lithium-ion is Li+. Deduce the formula and charge of the carbonate ion.

Explain your answer.

b. A space vehicle carries a crew of 7 astronauts. Each astronaut exhales 18 moles of carbon dioxide every day. Calculate the total number of moles of carbon dioxide that the crew will exhale during a mission into space which lasts 10 days.
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c. Calculate the mass of lithium hydroxide crystals which must be loaded on board the space vehicle to react with all the carbon dioxide exhaled during the mission.

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