63.15% C x 1/12.01 =5.258 5.258/1.972 = 2.666 x 3
5.30% H x 1/1.01 =5.248 5.248/1.972 = 2.661 x3
31.55% O x 1/16.00 =1.972 1.972/1.972 = 1
= C3OH3
To determine the empirical formula of mandelic acid, you first need to know the elemental composition (C, H, O) present in the compound. Then, convert the mass percentage of each element to moles. Next, divide the moles of each element by the smallest number of moles calculated. Finally, multiply the resulting ratios by a whole number to get the simplest whole-number ratio, which represents the empirical formula.
It's empirical formula would be NH2. An empirical formula represents the ratio of the atoms in the compound, rather than the actual number. You can work this out by dividing by a common denominator (in this case, 2).
* Carbon = 79.9g, hydrogen = 20.1g (work out the mass of each element) * 79.9/12 = 6.66, 20.1/1 = 20.1 (divide mass by atomic mass number) * Ratio = 6.66 : 20.1 = 1:3 (simplify to find lowest ratio) * Therefore the simplest ratio and the empirical formula is CH3.
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How should I know? I was trying to work this out to!
It neutralizes the acid.
from my work and looking around i think it is TeO2
Mercury oxides are: HgO and Hg2O.
It contains the true chemical formula in the molecule so it's technically more precise to work with.
It's empirical formula would be NH2. An empirical formula represents the ratio of the atoms in the compound, rather than the actual number. You can work this out by dividing by a common denominator (in this case, 2).
To determine the molecular formula, you would need the molar mass of the compound. With the molar mass, you can calculate the empirical formula mass and then determine the ratio between the empirical formula mass and the molar mass to find the molecular formula.
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)
This is how to work it out:Elements that combine:Zinc+OxygenMasses that combine:97.50 g121.50 gRelative atomic mass (Ar):65.40g16 gMoles of atoms that combine:97.50/65.40 = 1.49...`121.50/16 = 7.59375Ratio in which atoms combine:1.49... : 7.59375 OR 1 : 5 (simplified)Empirical formula (the simples ratio in which atoms in a compound are combined) should be ZnO5This is the method that should be used to work it out, although just check for yourself that the answer is right as usually the actual formula for zinc oxide is ZnO - so just check that it's right
it does not have a formula
it does not have a formula
Depends on what formula.
Lactic acid
his formula does not work because if you get a cone it adds up to 0