Draw the model on the picture below and read the question carefully

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.

What’s the theoretical yield of solid lead

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?