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The average Atomic Mass is used when calculating grams of a substance because it accounts for the different isotopes of an element and their relative abundances. Using the average atomic mass allows for a more accurate representation of the actual mass of the element in a sample.
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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.
The atomic mass of a mole?
The atomic mass of a mole is equal to the molar mass of that element expressed in grams. It represents the average mass of one mole of atoms of a particular element.
How many grams equal a teaspoon?
On average, a teaspoon of a substance weighs about 5 grams. However, this can vary depending on the density of the substance being measured.
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.
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.
The atomic mass of a mole?
The atomic mass of a mole is equal to the molar mass of that element expressed in grams. It represents the average mass of one mole of atoms of a particular element.
How many grams equal a teaspoon?
On average, a teaspoon of a substance weighs about 5 grams. However, this can vary depending on the density of the substance being measured.
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 many grams in one mole?
The number of grams in one mole of a substance is equal to the substance's molar mass in grams. This value is found on the periodic table as the atomic mass in atomic mass units (u). For example, one mole of carbon (C) is 12.01 grams, one mole of oxygen (O) is 16.00 grams, and so on.
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.
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 do you convert 2.9 grams to moles?
To convert grams to moles, you need to divide the given mass (2.9 grams) by the molar mass of the substance. The molar mass of a substance can be found by adding up the atomic masses of all the atoms in a molecule.
How are Avogadro constant average atomic mass and molar mass related?
The Avogadro constant establishes the number of particles (atoms, molecules, ions) in one mole of a substance. The average atomic mass is the weighted average of the isotopes of an element based on their natural abundance. The molar mass is the mass of one mole of a substance and is numerically equal to the average atomic mass in grams.
What does the atomic mass of an element indicate?
The average weight in grams of one mole of the element.
The mass of a mole of a substance expressed in grams is called a?
The mass of a mole of a substance expressed in grams is called the molar mass. This value is numerically equal to the atomic or molecular weight of the substance and is expressed in units of grams per mole.
