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What is the theoretical yield of aluminum oxide if 2.20 of aluminum metal is exposed to 1.95 of oxygen?
(Assuming that the numbers given are moles)For a problem like this, the best thing to do is write a balanced equation. This gets us:4Al + 3O2 -> 2Al2O3Now we must find the limiting reactant. That is, the reactant that will result in less product. Using the Coefficients as fractions, we find that 2.2mol of Al should yield:(2.2/4)*2= 1.1mol Al2O3Next we do the same with 1.95 mol of O2 to get:(1.95/3)*2= 1.3mol Al2O3We go with the lesser amount, so the answer is 1.1mol Al2O3.Or 112g
Equals explain why the sum of the coefficient on the reactant side of a balanced equation does not have to equal the sum of the coefficient on the product side of the equation?
The requirement for a balanced equation is that the numbers of each kind of atoms in the reactants must match the number of each kind of atoms in the products. The number of atoms in each molecule in the equation is the product of the coefficient and the subscript affixed after each element symbol in the formula to which the coefficient applies. For example, 2 Na + Cl2 = 2 NaCl. The coefficients on the left side total 3 but those on the right side total only 2. However, the number of atoms of each of sodium and chlorine total 2 on each side.
After a chemical reaction starts when will a chemical reaction end?
When the limiting reactant is completely used up. A limiting reactant is the reactant that determines the amount of product. To determine this use the balanced chemical reaction with the masses of the reactants to determine the moles of product formed. The reactant that forms the least amount of product will be the limiting reactant.
Is carbon dioxide a product or reactant?
Carbon dioxide, in photosynthesis, is a reactant, or "raw material" and in cellular respiration, is a product or end product, so it is really either, but the answer to the question according to the category is a "raw material."
Is copper oxide a reactant or product?
It can be either depending on the reaction. It can be a product of electrolysis of copper with sulfuric acid, or an acid base reaction of copper hydroxide and sulfuric acid. It can react with metals such as zinc.
The numbers which are placed in front of each reactant and product in order to balance the equation are called?
The numbers placed in front of each reactant and product to balance the equation are called coefficients. These coefficients help ensure that the number of atoms for each element is the same on both sides of the chemical equation.
How do you make the reactant and product have the same amount of atoms?
You place coefficients in front of the chemical formulas.
What gets written into a chemical reaction when it is balanced?
In a complete and correctly balanced chemical equation you will have the coefficients for each reactant and product indicating the mole ratios as well as the phases of each reactant and product.
How is stoichiometry used to calculate amount of product from amount of reactant?
The coefficients give the ratio of moles reactant to moles product.
How do you find out how many moles of lead will be produced from a limiting reactant?
Knowing the limiting reactant, ignore other reactants and calculate the product (lead) based on just that one reactant using the coefficients of the balanced equation.
Does an equation indicates the number of atoms of each product and each reactant involved in a reaction?
Not quite. A properly balanced an equation indicates the number of atoms of any elemental product and any elementalreactant involved in a reaction, along with the number of molecules of any molecular compound product and any molecular compound reactant involved in the reaction. The original sentence is deficient because in any chemical reaction, there must be at least one non-elemental product or reactant.
What does a coefficients tell you?
That would depend on the coefficient in question. ------------------------------------------------------------------------------A coefficient indicates how many molecules or atoms of each reactant & product are involved in a reaction. -<3
Where should coefficients be place when balaning a chemical equation?
Coefficients should be placed in front of the chemical formulas in a chemical equation to balance it. They are used to ensure that the number of atoms of each element is the same on both the reactant and product sides of the equation.
Is sulphur a reactant or a product?
reactant
The speed at which a reactant will change to a product is proportional to its?
The speed at which a reactant will change to a product is proportional to its concentration. This relationship is described by the rate law of the reaction. Changes in other factors, such as temperature and the presence of catalysts, can also affect the reaction rate.
Is cobalt a reactant product or reactant and product?
This depends on the reaction involved.
Is iron sulfate reactant or a product?
Reactant
