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What three types of information are needed on order to find an empirical formula from percentage composition data?
Wiki User
∙ 11y ago
· Assume that you have 100.0 g sample of the compound
· Calculate the amount of each element in the sample
· Convert the mass composition of each element to a composition in moles by dividing by the appropriate molar mass
Wiki User
∙ 11y ago
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What is the formula of percentage?
The formula of percentage is pi. This is used in math.
What is the empirical formula for a compound that is 43.6 percent phosphorus and 56.4 percent oxygen?
p2o5
75.7 percent arsenic and 24.3 percent oxygen what empirical formula would it have?
As2O3
What would the empirical formula be for 66 percent Barium and 34 percent Chlorine?
BaCl2
What is molar mass a whole number multiple of?
Molar mass is a whole number multiple of the Empirical formula mass
What is the importance of percentage composition?
Percent composition can be used to calculate the percentage of an element/compound in a mixture. From the percent composition, you can also find the empirical formula. And from the empirical formula you can find the actual molecular weight.
How can you find the molecular formula of a compound when its percentage composition is given?
Yes, if you have some additional information, such as the molecular weight. For instance, the molecules C2H4 and C4H8 have exactly the same percent composition, but they are very different molecules. So you need some other information to tell them apart than the percent composition.Answer ExpandedThis is kind of a trick question. By knowing the percent composition, you would easily be able to determine its empirical formula, but molecular formula is a bit different. The molecular formula is the actual number of atoms in a molecule, so in order to find the specific molecular formula of a substance, you would also need to know how many grams there is of that substance.(This explains the difference between C2H4 and C4H8)
Empirical formulas describe the types of atoms in a compound and their?
An empirical formula give information about the chemical composition of a compound. Example: tetracycline with the empirical formula C22H24N2O8 has the following composition: - carbon 59,44 % - oxygen 28,81 % - nitrogen 6,30 % - hydrogen 5,45 % If you're with plato the answer is ratios
What is an example of the emprical formula?
There is not enough information to answer the question
Can you determine the molecular formula of a substance from its percent composition?
Not completely. The empirical formula of a substance can be determined from its percent composition, but a determination of molecular weight is needed to decide which multiple of the empirical formula represents the molecular formula.
How is the Law of definite composition and proportion relate to the empirical formula?
empirical formula is the simple whole number ratio of the components.
Which could represent the empirical and the formula of a given compound?
The empirical formula is representative for the chemical composition of a compound; the structural formula is representative for the spatial structure of the compound.
Explain why the percent composition of certain compounds are not sufficient to determine the compounds molecular formulas?
Because unlike the empirical formula, the molecular formula does not have to be the simplest ratio.If by chance you are given the percent composition of the elements in a substance, you could calculate the empirical formula and then the empirical formula's mass. However, the molecular formula equation is molecular formula= (empirical formula)n, where n is the mass of the molecular formula divided by the mass of the empirical formula. You would, therefore, need to know the mass belonging to the molecular formula, which you are not given.
How do you know when to solve for a empirical formula?
If it tells you to find the empirical formula when percent composition is given or if the mass of each element is given in a specific compound.
How does one determine a molecule formula from the empirical formula?
The density or some other information must be given that allow you to find the molar mass. Calculate the empirical formula mass. Divide molar mass by empirical formula mass. This answer is multiplied by all subscripts of the empirical formula to get the molecular formula.
The empirical formula may not represent the actual composition of a?
The empirical formula is the smallest whole number ratio of different elements in a molecule. The molecular formula has the actual number of atoms of different elements in a molecule
How do you determine the empirical formula of a metal oxide?
First it is necessary a correct chemical analysis of this compond, with the goal to establish the empirical chemical composition.
