How much zinc sulfide is produced from 5.0 g of Zn and S?

[priscilla98]

Homework Statement

5.0 g of Zn is heated with an equal amount of S, bow much zinc sulfide is produced?

Homework Equations

The Attempt at a Solution

Wouldn't there be an equation to solve this problem? I know law of constant composition is an observation that the elemental composition of a pure compound is always the same.

 

[Bohrok]

By equation do you mean a chemical equation?

You have 5.0 g of Zn and 5.0 g of S, you need to find out which is the limiting reagent.

 

[priscilla98]

Okay, then do you have to do a balanced chemical equation?

 

[Bohrok]

I would start with that first.

 

[priscilla98]

5 Zn --> 5 S

Do you mean something like this? I really do appreciate this alot, thanks for your help

 

[Bohrok]

Zn and S are the reactants, so they go on the left side.

Zn + S → ZnS
(now you know what the equation is)

The masses of the reactants don't have a part in the equation itself at all.

 

[priscilla98]

ok thanks a lot for this

 

[Bohrok]

Do you know how to convert grams of a substance to moles? I would first start changing all the grams to moles.