How many moles of carbon disulfide (CS2) are needed to react with 0.405 L of oxygen at STP

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

Word equation for k(s) +h2o(l) yield koh (aq) + h2