Calculating reactant moles  [ENDORSED]

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CaminaB_1D
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

Calculating reactant moles

Postby CaminaB_1D » Thu Oct 04, 2018 9:26 pm

Can someone explain the step of calculating reactant moles when solving a stoichiometry problem. In other words, I do not understand the "why" behind the calculations of this step.

Jasmin Argueta 1K
Posts: 69
Joined: Fri Sep 28, 2018 12:16 am

Re: Calculating reactant moles

Postby Jasmin Argueta 1K » Thu Oct 04, 2018 9:31 pm

Do you have a problem you would like help with? Maybe running through the steps with numbers will help when explaining.

CaminaB_1D
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

Re: Calculating reactant moles

Postby CaminaB_1D » Thu Oct 04, 2018 9:33 pm

M.3 in the sixth edition!

Venya Vaddi 1L
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Re: Calculating reactant moles  [ENDORSED]

Postby Venya Vaddi 1L » Thu Oct 04, 2018 9:35 pm

You are calculating the reactant moles in order to compare the amount of reactants available to the ratios in the balanced equation to determine which reactant is limiting. You cannot compare the quantities in grams since your balanced equation gives you molar ratios.

Theodore_Herring_1A
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

Re: Calculating reactant moles

Postby Theodore_Herring_1A » Thu Oct 04, 2018 9:42 pm

Let's say you have 2kg of hamburger patties and 1kg of hamburger buns. How many hamburgers can you make? As you can see, we would need to know the amount of hamburger patties and buns you have in order to make this calculation. This is why we convert from grams into moles, so that we know the amount of reactants in a reaction.


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