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Are all sample of elements are composed of atoms with same atomic mass?
No, different samples of an element can have varying atomic masses due to the presence of isotopes. Isotopes are atoms of the same element with different numbers of neutrons, leading to different atomic masses.
Why do relative molecular mass have decimals?
They are the calculated averages of all the isotopes of a particular element in accordance to their relative abundances, and hence is generally not an integer due to the mathematical division involved.
What is the difference between atomic mass?
Atomic mass refers to the mass of an atom of a chemical element, which is the sum of the number of protons and neutrons in the nucleus. On the other hand, molecular mass refers to the sum of the atomic masses of all the atoms in a molecule, including the contributions from electrons. In general, atomic mass is specific to individual atoms, while molecular mass relates to groups of atoms bonded together.
Does mole of carbon atoms have a different mass than a mole of sulphur atoms?
Yes. To find out the mass of a mole of atoms of any given element, see the atomic mass given on the periodic table. A mole of carbon atoms has a mass of 12.011 grams. A mole of sulfur atoms has a mass of 32.06 grams.
Where are the mass variances in 2 atoms of the same element and why do they occur?
If the chemical element has isotopes, each isotope has a specific and different atomic mass.
What are atoms with the same atomic number but different mass called?
Atoms with the same atomic number are all atoms of the same element. However, if the atoms have different molecular weights, they are isotopes of the same element.
Are all sample of elements are composed of atoms with same atomic mass?
No, different samples of an element can have varying atomic masses due to the presence of isotopes. Isotopes are atoms of the same element with different numbers of neutrons, leading to different atomic masses.
Why do relative molecular mass have decimals?
They are the calculated averages of all the isotopes of a particular element in accordance to their relative abundances, and hence is generally not an integer due to the mathematical division involved.
To determine the subscript of an element in a molecular formula the empirical mass must be multiplied by the actual mass?
The actual mass must be divided by the empirical mass. This was derived from the following equation: (subscript)(empirical formula) = (molecular formula) subscript = (molecular formula)/(empirical formula)
What are atoms of the same element have different mass numbers?
Isotopes.Isotopes.
How is it possible for two different atoms to have the same atomic mass?
They would have to be atoms of the same element, and the same isotope of that element.
Atoms of the same element with different mass numbers are known as?
Isotopes.
Atoms of the same element that have a different number of neutrons and a different atomic mass are what?
isotopes
Why atoms of same element have different mass numbers?
Isotopes, different neutron quantities.
What additional information is needed to calculate the molecular formula from the percent by mass of each element in a compound?
In addition to the percent by mass of each element, you also need the molar mass of each element. This information allows you to convert the percent by mass into grams and then into moles, which is necessary to determine the empirical formula and subsequently the molecular formula of the compound.
How does on determine a molecular formula from the empirical formula?
molar mass over grams of elementThe above answer is somewhat correct. In order to find the molecular formula when given the empirical formula, you must first find the molar mass of the empirical formula.MOLAR MASS# atoms element A x Atomic Mass element A (Periodic Table) = mass A# atoms element B x atomic mass element B (periodic table) = mass B... etc.Add up all of the mass values found above and you have the molar mass.Then, after you have found the empirical formula's molar mass, you divide the molar mass of the molecular formula by the empirical formula's molar mass (solving for n).MOLECULAR FORMULA EQUATION: N (Empirical formula) (read as N times empirical formula) where:N = Molar mass substance---- Molar Mass emp. form.
What is the difference between atomic mass?
Atomic mass refers to the mass of an atom of a chemical element, which is the sum of the number of protons and neutrons in the nucleus. On the other hand, molecular mass refers to the sum of the atomic masses of all the atoms in a molecule, including the contributions from electrons. In general, atomic mass is specific to individual atoms, while molecular mass relates to groups of atoms bonded together.
