Metallic molybdenum can be produced from the mineral molyb- denite, MoS,. The mineral is first oxidized in air to molybde-
num trioxide and sulfur dioxide. Molybdenum trioxide is then
reduced to metallic molybdenum using hydrogen gas. The bal-
anced equations are
MoS2(s) + O2(g) → MoO3(s) + 2SO2(8)
MoO3(s) + 3H2(g) → Mo(s) + 3H2O(1)
Mass
Volume
Temperatu
Pressure
Calculate the volumes of air and hydrogen gas at 17°C and 1.00
atm that are necessary to produce 1.00 X 109 kg of pure molyb-
denum from MoS2. Assume air contains 21% oxygen by volume
and assume 100% yield for each reaction.

Juju.01) 5 geologic events a group of students designed an experiment in an ice rink to represent the solar system. the steps of the experiment are listed below. 5: geologic events 1. choose a student to represent the sun. the planets are represented by two tennis balls. 2. ask the student to hold the tennis balls in each palm and spin on the ice with arms stretched out. 3. ask the student to draw in the arms after about 10 spins. 4. observe the student's arms rotate faster when they are closer to the body. 05 geologic events enors) the experiment most likely demonstrates that (2 points) 07 discussion-based sessment/module planets exert gravitational force on the sun the sun exerts gravitational force on the planets 3.07 discussion-based ssessment speed of a planet depends on its distance from the sun new version available! (3.0.119) get it now submit 18.07: module exam description

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