I am also pretty sure the answer is B, but give the answer above me Brainliest. Have a great day
Answer:
0.744 mol
Explanation:
the balanced equation for the reaction is
8Fe + S₈ ---> 8FeS
molar ratio of Fe to S₈ is 8:1
number of moles of Fe - 55.0 g / 56 g/mol = 0.98 mol
number of moles of S - 23.8 g / 256 g/mol = 0.093 mol
if we are to assume that S₈ is the limiting reactant
if 1 mol of S₈ reacts with 8 mol of Fe
then 0.093 mol of S₈ reacts with - 8 x 0.093 mol = 0.744 mol of Fe
however there's 0.98 mol of Fe present but only 0.744 mol of Fe is needed
therefore Fe is in excess and S₈ is the limiting reagent
molar ratio of S₈ to FeS is 1:8
then 0.093 mol of S₈ reacts with - 8 x 0.093 = 0.744 mol of FeS
number of FeS moles produced is 0.744 mol
Answer:
Explanation:
substance (as an acid or salt) that when dissolved (as in water) conducts an electric current.
<u>The forces between molecules are much stronger than the forces between ions.</u>
➜ True
![-kt = ln[\frac{FinalAmount}{InitialAmount}]](https://tex.z-dn.net/?f=-kt%20%3D%20ln%5B%5Cfrac%7BFinalAmount%7D%7BInitialAmount%7D%5D)
![t = - \frac{4.5}{ln2} \times ln[\frac{0.55}{1}]](https://tex.z-dn.net/?f=t%20%3D%20-%20%5Cfrac%7B4.5%7D%7Bln2%7D%20%5Ctimes%20ln%5B%5Cfrac%7B0.55%7D%7B1%7D%5D)
![t = - \frac{4.5}{ln2} \times ln[\frac{0.63}{1}]](https://tex.z-dn.net/?f=t%20%3D%20-%20%5Cfrac%7B4.5%7D%7Bln2%7D%20%5Ctimes%20ln%5B%5Cfrac%7B0.63%7D%7B1%7D%5D)