Your teacher drinks a glass of water in the front of the classroom and claims, “this water could have been frozen in a glacier on Greenland thousands of years ago.” write an argument to support this claim that water could have moved from a glacier on Greenland to a local Baltimore County Reservoir and into your school’s water fountain.  

my argument is that while the the glacier is Greenland is really cold it could still have melted whilst melting the water cycle is happening and over and over that water moves and moves then it gets in to the schools water fountain and the teacher drinks from that water

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

i wish i could but this one is weird give me abc and i can solve it.