Wegener's theory of continental drift was not widely accepted until long after his death. Why did scientists initially reject Wegener's theroy?
A. He could not explain that coal beds and glaciers that match on the edges of different
continents
O B. He could not explain that the continents fit together like puzzle pieces
O C. He could not explain the force that was strong enough to cause the continents to move
O D. There was no evidence of fossils from the same species on different continents

first, consult an activity series chart to determine if al is more reactive than fe. it is, so it will replace the fe. now, one can continue with the problem.

next, make sure you have a correctly balanced equation.

3feo + 2al ==> 3fe + al2o3

now, determine which reactant (feo or al) is in limiting supply.

moles feo present = 125 g x 1 mole/71.8 g = 1.74 moles

moles al present = 25.0 g x 1 mole/26.98 g = 0.927 moles

since from the balanced equation, it take 3 mol feo for every 2 mol al, al will be limiting.

you can determine this simply by dividing moles of each by their coefficient in the balanced equation. for example: 1.74/3 = 0.58 and 0.927/2 = 0.464. al is less, so it is limiting.

finally, using the stoichiometry in the balanced eq. determine mass of fe that can be produced from 0.927 moles of al.

0.927 moles al x 3 moles fe/2 moles al x 55.8 g/mole = 77.6 g

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants