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An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound?
The empirical formula is CH2O. To find the molecular formula, you need to calculate the empirical formula weight (30 g/mol) and divide the molecular mass (180.0 g/mol) by the empirical formula weight to get 6. This means the molecular formula is (CH2O)6, which simplifies to C6H12O6, the molecular formula of glucose.
How is percent composition by mass determined?
For a chemical compound, ex. ABC: Percent (%) of A is (atomic weight of A x 100)/molecular weight of ABC.
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.
What is the chemical composition of earth?
The earth is actually composed of a total of 90 chemical elements. 81 of them have at least one stable isotope.
What is the molecular geometry of OF 2?
tetrahedral 100 percent Jew says 100 percent tetrahedral. Shalom
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.
Convert 0.0141mol percent to weight percent?
To convert from mol percent to weight percent, we need to know the molecular weights of the substances involved. Without this information, we cannot accurately convert 0.0141 mol percent to weight percent.
Is 90 percent used as a label measure count or position?
Percent is a unit of measure.
An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound?
The empirical formula is CH2O. To find the molecular formula, you need to calculate the empirical formula weight (30 g/mol) and divide the molecular mass (180.0 g/mol) by the empirical formula weight to get 6. This means the molecular formula is (CH2O)6, which simplifies to C6H12O6, the molecular formula of glucose.
How do you Convert percent to inches?
Percent is not a unit of measure. There is no conversion.
MSG has 35.51 percent C 4.77 percent H 37.85 percent O 8.29 percent N and 13.60 percent NaWhat is its molecular formula if its molar mass is 169g?
LL
What is 90 percent molecular hydrogen 9 percent helium and 1 percent heavier elements?
This could be the composition of some star, except that the hydrogen in a star is not likely to be molecular because of the high temperature. About the only sensible answer to the question as literally stated is "a mixture, probably of gases".
How is percent composition by mass determined?
For a chemical compound, ex. ABC: Percent (%) of A is (atomic weight of A x 100)/molecular weight of ABC.
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.
What is a percent circle?
A circle that can measure percents.
What is weight of 2 mole percent of molecular iodine?
.005078 g is the weight of 2 mole percent molecular iodine.
How do you convert a percent into a degree measure?
convert 27%to a degree measure on a circle graph
