Question

Antimony (Sb) is produced by reacting Antimony Sulfide (Sb2S3) with elemental Iron (Fe). The by-product is Iron Sulfide (FeS). 67.0 kg of Fe is reacted 1.0 kg Sb2S3. Assume the reaction goes to completion.

After the the reaction has reached completion, the reactor contents at the completion of this reaction will be the following:

Enter the number of kg of Sb2S3 remaining:

Enter the number of kg of Fe remaining:

Enter the number of kg of FeS present:

Enter the number of kg of Sb present:

Answer 1

First we need to get the reaction... Sb2S3 + 3 Fe -> 2 Sb + 3 FeS

Answer 2

Get moles for Sb2S3: 1 kg = 2.9436 moles
Fe: 67 kg = 1199.74 moles

Answer 3

So you'll have 0 kg of Sb2S3 left, and get 0.7169 kg Sb and 0.7763 kg FeS... Working on the rest!

Answer 4

66.83 kg of Fe left! Hope i got everything right!

Answer 5

everything but the 66.83 is right

Answer 6

oops... let me check that!

Answer 7

is that how much is used?

Answer 8

66.508

Answer 9

Who in their right mind would set up a reactor like that? ;)

Answer 10

yes that was right! Thank you so much! Have you gotten 9 yet still stuck on that one?

Answer 11

Stuck on that. There are different questions for #9 too :(

Answer 12

I have this one

Determine the wavelength of radiation which is capable of generating (by ionization) electrons from atomic hydrogen which have a velocity of 800 km/s.

I got 1.21*10^-7 but its wrong