# How do you calculate excess moles?

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## How do you find the maximum amount of products that can be formed?

Limiting-reactant principle – The maximum amount of product possible from a reaction is determined by the amount of reactant present in the least amount, based on its reaction coefficient and molecular weight.

## How do you find the moles of a limiting reactant?

If you’re given the moles present of each reactant, and asked to find the limiting reactant of a certain reaction, then the simplest way to find which is limiting is to divide each value by that substance’s respective coefficient in the (balanced) chemical equation; whichever value is smallest is the limiting reactant.

## What happens to the excess reagents?

The limiting reagent in a chemical reaction is the reactant that will be consumed completely. Once there is no more of that reactant, the reaction cannot proceed. Therefor it limits the reaction from continuing. The excess reagent is the reactant that could keep reacting if the other had not been consumed.

## How do you find the moles of a product formed?

In order to calculate the moles of a product, you must know the mass of the product, and its molar mass (g/mol), which is the mass of one mole of of the product. You then divide the mass of the product by its molar mass.

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## How do you find the maximum amount?

If you are given the formula y = ax2 + bx + c, then you can find the maximum value using the formula max = c – (b2 / 4a).

## How do you find the moles of a reaction?

Divide the number of grams of each reactant by the number of grams per mole for that reactant. 50.0 g of Na are used in this reaction, and there are 22.990 g/mol. 50.0 ÷ 22.990 = 2.1749. 2.1749 moles of Na are used in this reaction.

## How do you calculate the limiting reagent?

Calculate the number of moles of each reactant by multiplying the volume of each solution by its molarity. Determine which reactant is limiting by dividing the number of moles of each reactant by its stoichiometric coefficient in the balanced chemical equation.

## Which law has to be obeyed during stoichiometric calculations?

Ans: Law of conservation of mass must be obeyed while doing stoichiometric calculations.