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.

answer; i believe the correct answer is (solid gold);

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

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