The density of tungsten is 1210 lb ft3 what would be its specific volume. wanted all working : (

Specific volume of Tungsten is .

Explanation: The density of Tungsten is given as 1210 lb per cubic feet and it asks to calculate its specific volume.

Density is directly proportional to the mass and inversely proportional to the volume where as specific volume is directly proportional to the volume and inversely proportional to the mass. It means, specific volume is the reciprocal of density.

specific volume =

Let's plug in the given value of the density in above formula:

specific volume =

specific volume =

If we want to write the answer in scientific notations then need to move the decimal four places to the left and so it becomes

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

the answer is b. dilution