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Why is the average atomic mass used when calculating grams of a substance?
Wiki User
∙ 12y ago
the elements in the substance are mixtures of their isotopes
Wiki User
∙ 12y ago
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Why is the average mass used when calculating grams of a substance?
the elements in the substance are mixtures of their isotopes
How is a mole related to the atomic mass?
The atomic mass, in grams, is the mass of one mole of atoms.
How do you determine the number of moles in an element?
Multiply the # of grams by the element's atomic weight. Or if dealing with milliliters, multiply the volume by solutions molarity. When calculating a molecule's # of moles, multiply the # of grams by the molecular weight.
The atomic mass of a mole?
When isotopes are considered, they have the same atomic number but differed mass numbers.
Where are the lowest and highest atomic masses found in the periodic table?
The element with the lowest average atomic mass is hydrogen (H) at 1.008 grams. The element with the highest is meitnerium (Mt) at 266 grams.
Why is the average mass used when calculating grams of a substance?
the elements in the substance are mixtures of their isotopes
How do you convert 40 mmol of Sodium to grams?
A mole is 6.022*10^23 of a substance. An element's atomic mass, the number below the element's atomic symbol on the periodic table, is the number of grams one mole of that substance weighs. Multiply the number of moles of substance (here, 40 if you meant 40 moles or .04 if you meant millimoles) by the atomic mass of the substance (here, sodium's is 22.98977) to get the final answer in grams.
How is a mole related to the atomic mass?
The atomic mass, in grams, is the mass of one mole of atoms.
How do you determine the number of moles in an element?
Multiply the # of grams by the element's atomic weight. Or if dealing with milliliters, multiply the volume by solutions molarity. When calculating a molecule's # of moles, multiply the # of grams by the molecular weight.
How does the atomic mass measure?
The atomic mass is the average weight of one mole of a substance (6.022 * 10^23 atoms or molecules) in grams. For elements, this is usually around double the number of protons but varies due to isotopes containing more or fewer neutrons.
The atomic mass of a mole?
When isotopes are considered, they have the same atomic number but differed mass numbers.
What does the atomic mass of an element indicate?
The average weight in grams of one mole of the element.
Where are the lowest and highest atomic masses found in the periodic table?
The element with the lowest average atomic mass is hydrogen (H) at 1.008 grams. The element with the highest is meitnerium (Mt) at 266 grams.
What is the mass of 2 moll of carbon?
It is approximately 24.02 grams. Each mole of carbon weights 12.01 grams (one mole= enough particles to make a substance's weight in grams equal to it's atomic weight in amu; same amount of particles for every substance).
Does the Periodic Table of Elements Chlorine have35.45 protons?
No, 35.45 is the atomic mass. The number of protons is equal to the atomic number (17). The atomic mass tells how much one mole of that substance weighs in grams.
Define one mole of a substance applied to atomic structure?
A mole is used to measure the amount of substance.1 mole of any substance contains 6.023 x 1023 molecules of that substance. 1 mole of a substance has mass equal to the atomic weight or molecular weight expressed in grams. Note:The number "6.023 x 1023" is called Avogadro's Number
How many moles of table salt are in a box that has 117 grams of salt?
roughly a mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as an amount of a substance that contains as many elementary entities as there are atoms in the atomic weight of the substance in grams.Sodium has an atomic weight of 22.99Chlorine has and atomic weight of 35.45NaCl has a molecular weight of 58.44Therefore a mole of NaCl would weigh 58.44 grams117 grams is therefore roughly equal to 2 moles of table salt.
