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BlackZzzverrR [31]
3 years ago
12

Can each polyatomic ion be treated as a unit when balancing the chemical equation

Chemistry
1 answer:
marysya [2.9K]3 years ago
3 0
Yes. You can either treat the entire polyatomic ion as a unit or separate the elements in the polyatomic ion. Pay attention the parentheses and subscripts, though. Those can confuse people a lot. I personally find it easier to just treat it as a whole unit.  
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If 0.400 moles CO and 0.400 moles O2 completely react how many grams of CO2 are produces?
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First, let us look at the balanced equation of reaction:

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According to the equation, the mole ratio of CO and O2 is 2:1. But in reality, the mole ratio supplied is 1:1. Thus, CO is the limiting reactant while O2 is in excess.

Also from the equation, the ratio of CO consumed to that of CO2 produced is 1:1. Thus, 0.400 moles of CO2 would also be produced from 0.400 moles of CO.

Recall that: mole = mass/molar mass

Therefore, the mass in grams of CO2 that would be produced from 0.400 moles can be calculated as:

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More on calculating mass from number of moles can be found here: brainly.com/question/12513822

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