What is the empirical formula of a hydrocarbon with 90% carbon and 10% hydrogen by mass?
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What is the empirical formula of a hydrocarbon with 90% carbon and 10% hydrogen by mass?
This task is quite confusing for me,i tried to solve it,but i never got the right answer. A hydrocarbon contains 90% by mass of carbon. What is its empirical formula? The answer is C3H4,but i don’t know how to get this ratio.
What is the empirical formula of carbon and hydrogen?
While C2H4 is its molecular formula and represents its true molecular structure, it has an empirical formula of CH2. The simplest ratio of carbon to hydrogen in ethene is 1:2. There are two ways to view that ratio. Considering one molecule of ethene, the ratio is 1 carbon atom for every 2 atoms of hydrogen.
What is the empirical formula for 75% carbon and 25% hydrogen?
A compound contains 75% carbon and 25% hydrogen….
| Elements | Carbon | Hydrogen |
|---|---|---|
| Mole ratio (divide each number of moles by the smallest number of moles) | 6.25 6.25 =1 | Empirical formula CH4 25 6.25 = 4 |
| Empirical formula | C | H4 |
What is the empirical formula of a compound that has a carbon to hydrogen ratio of 2 to 6?
What is the empirical formula of a compound that has a carbon to hydrogen ratio of 2 to 6? A compound has the empirical formula CH2O and a gram formula mass of 60 grams per mole.
What is the empirical formula of a hydrocarbon that is 89.97% by mass carbon?
Explanation: 89.9%×120.0 gmol = 107.9 gmol C . Divide thru by the atomic mass of C , 12.011gmol = 9 . Therefore the empirical formula is C9H? .
Which compound has the empirical formula with the greatest mass?
Mass of C2H5 (which is emperical formula of C4H10 ) is greatest compared to emperical formula mass of other options.
What is the empirical formula of hydrogen?
Empirical Formulas Thus, H2O is composed of two atoms of hydrogen and 1 atom of oxygen. Likewise, 1.0 mole of H2O is composed of 2.0 moles of hydrogen and 1.0 mole of oxygen.
What is the empirical formula of a 100 g sample of a compound containing 75% carbon and 25% hydrogen?
Therefore, empirical formula is C1H4 or simply, CH4.
How do I find the empirical formula?
Calculate the empirical formula.
- In any empirical formula problem you must first find the mass % of the elements in the compound.
- Then change the % to grams.
- Next, divide all the masses by their respective molar masses.
- Pick the smallest answer of moles and divide all figures by that.
How do you find the empirical formulas?
How do you find the empirical formula from a table?
Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.
What is empirical formula of compound containing 75% carbon and 25% hydrogen the atomic weight of carbon is 12 and hydrogen is one?
Therefore, empirical formula is C1H4 or simply, CH4 .
