9. 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 a. 2LIOH + CO₂ → Li₂CO3 + H₂O The formula and charge of a lithium ion is Lit 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. Show your working. 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. Show your working.

Q7. What is the source of energy for stars and the sun. Explain the proton-proton fusion chain.

The planet Zoltan is located in a solar system in the Andromeda galaxy. On Zoltan, the standard unit for the amount of substance is the wog and the standard unit for mass is the wibble. The Zoltanians, like us, chose carbon-12 to define their standard unit for the amount of substance. By definition, one wog of C-12 atoms contains 2.50 x 1021 atoms. It has a mass of exactly 12 wibbles. What is the mass, in wibbles, of 1 wog of nitrogen atoms? What is the mass, in wibbles, of 5.00 x 10-1 wogs of O2? What is the mass, in grams of 1 wog of hydrogen atoms?   Expert Solution

Na + 2 H2O à 2 NaOH + H2 If 50 g of sodium (Na) is placed in water, what mass of hydrogen gas (H2) is produced?

Select the correct molecular mass of carbon monoxide (CO) by adding the atomic mass of carbon and the atomic mass of oxygen. A 22.4 L CO B 28.01 g CO U 55.85 g CO D 44.01 g CO

C. The Born-Haber process is produces ammonia (NH3) and is responsible for the vast increase in agricultural production of the 20th century. Write and balance the equation for this process: diatomic nitrogen reacts with diatomic hydrogen to produce ammonia (NH3). 365 d. How many grams of diatomic nitrogen (N₂) are needed to produce 2.75 moles of ammonia?

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Observations of the reaction between nitrogen gas and hydrogen gas show us that 1 volume of nitrogen reacts with 3 volumes of hydrogen to make 2 volumes of gaseous product, as shown below: Determine the formula of the product and justify your answer.