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Calculated mass differs from actual mass due to various factors such as measurement inaccuracies, the presence of impurities, and assumptions made during calculations, such as ideal conditions. Additionally, the calculated mass often relies on theoretical values or assumptions about atomic weights and molecular structures that may not account for real-world variations. Environmental factors like temperature and pressure can also influence actual mass measurements.
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Mass number Why is it not the number on the periodic table?
Elements have different isotopes and each isotope will have different atomic mass. As such it is not possible to list the mass number of all the isotopes on the periodic table. However, the atomic mass is generally given on the periodic table which is generally calculated taking into account all the isotopes and its percentage.
How are atomic mass on the periodic table calculated?
Atomic mass is determined by mass spectrometry.
What is the average atomic mass f potassium?
The average atomic mass of potassium is approximately 39.10 atomic mass units (amu). This value is calculated by taking into account the different isotopes of potassium and their relative abundances in nature.
What is the average atomic mass of nitrogen in amu?
The average atomic mass of nitrogenis 14.0067.
A student measured the mass of a small object and found it to be 56.0 grams The object's mass is known to be 55.0 grams What is the percent of error in the student's measurement?
The percent error in the student's measurement is calculated as |(measured value - actual value) / actual value| x 100. Plugging in the values, we get |(56.0g - 55.0g) / 55.0g| x 100 = 1.82%. This means the student's measurement is 1.82% higher than the actual value.
Why does not an atom of an element represent the actual mass of its atom?
An atom of an element does not represent the actual mass of its atom because the atomic mass listed on the periodic table is an average mass calculated based on the relative abundance of different isotopes of the element. Isotopes are atoms of the same element with differing numbers of neutrons, so the actual mass of an atom of a specific isotope may vary slightly from the average atomic mass.
A student estimated the mass of a sample of powdered sulfur to be 35 g The actual mass of the sample was 42.5 g What was the error in this measurement?
The error in the measurement was 7.5 g. This was calculated by subtracting the estimated mass (35 g) from the actual mass (42.5 g).
What correctly explains why the actual mass of an atom is less than the calculated mass of its protons neutrons and electrons?
The calculated mass of the nucleus is always greater than the experimentally determined mass.This difference is variously called as mass defect,mass deficit or mass decrement.The reason for mass defect is that,this deficit mass has been transformed into the nuclear binding energy by Einstein equation E=mc2.
What is the difference in molar mass and atomic mass?
molar mass is the actual mass of the one atom but relative mass is the average isotopes of the atoms.------------------------------------------Atomic mass is the mass of an isotope, expressed in atomic mass units.Molar mass is the mass of molecule, calculated from the atomic weights of the contained chemical atoms, expressed in grams.
Why is the theoretical value for modulus of elastricity for mild steel is different from the calculated value?
because it is the ratio of the stress to the strain and in actual condition the strain developed is different from the theoretical .
What is atomic mass and number of gas molecule?
Atomic mass is the mass according to the number of protons and neutrons in the nucleus of the atom. The actual mass is the average of the masses of the different isotopes of the same element (alternative forms of the same element with the same no of protons but different no of neutrons) accordong to the isotopes mass and abundance in the world.
What is the mass defect formula used to calculate the difference in mass between the nucleus of an atom and the sum of its individual nucleons?
The mass defect formula is used to calculate the difference in mass between the nucleus of an atom and the sum of its individual nucleons. It is calculated by subtracting the actual mass of the nucleus from the sum of the masses of its individual protons and neutrons.
What is mass density and how is it calculated?
Mass density is a measure of how much mass is contained in a given volume of a substance. It is calculated by dividing the mass of an object by its volume. The formula for mass density is: Density Mass / Volume.
What is the calculated by dividing mass by volume?
Density is calculated by dividing mass by volume. It is a measure of how much mass is contained in a given volume of a substance.
What is the definition of mass density and how is it calculated?
Mass density is a measure of how much mass is contained in a given volume of a substance. It is calculated by dividing the mass of an object by its volume. The formula for mass density is: Density Mass / Volume.
Why is the relative atomic mass of an element rarley a whole number?
Partly because many elements occur naturally as at least two isotopes, which have different mass numbers, and partly because may isotopes have actual masses that are different from their (always integral) mass numbers. This latter effect is most pronounced among ferrous metal atoms, which have the strongest nuclear binding energies of all atoms and consequently have less actual mass than the sum of the actual masses of all their constituent subatomic particles.
How is the density different from mass and volume?
Density is a measure of how much mass is contained in a given volume of a substance. Mass is the amount of matter in an object, while volume is the amount of space that an object occupies. Density is calculated by dividing the mass of an object by its volume.
