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Molecular Weight of Krypton
The molecular weight of a substance represents the mass of one mole of that substance. In the case of krypton, its molecular weight is 83.80 g/mol.
To calculate the molecular weight, we add up the atomic weights of all the atoms in the molecule. For krypton, which is a monatomic gas, the molecular weight is simply the atomic weight of krypton, which is 83.80 g/mol.
Mole-to-Gram Conversion
The mole is a unit of measurement that represents a specific number of particles, in this case, atoms or molecules. One mole of any substance contains 6.022 x 10 23particles.
To convert moles to grams, we multiply the number of moles by the molecular weight of the substance. This gives us the mass of the substance in grams.
Calculation of Mass
To calculate the mass of 7.98 moles of krypton, we use the following formula:
Mass = Moles x Molecular Weight
Substituting the given values into the formula, we get:
Mass = 7.98 moles x 83.80 g/mol = 668.204 g
Therefore, 7.98 moles of krypton has a mass of 668.204 g.
Units and Precision: What Mass In G Does 7.98 Moles Of Kr Have
It is important to use the correct units in the calculation. In this case, the mass is in grams and the molecular weight is in g/mol. The result is also in grams.
The answer should be expressed with appropriate precision. In this case, the answer is given to three decimal places, which is appropriate for the given data.
Example Table
| Moles | Molecular Weight (g/mol) | Mass (g) |
|---|---|---|
| 7.98 | 83.80 | 668.204 |
Additional Considerations
This calculation assumes that the krypton is pure and that there are no other substances present. If the krypton is not pure, the mass of the other substances will also be included in the calculation.
This calculation can be modified for different quantities or substances. Simply substitute the appropriate values into the formula.
FAQ Overview
What is the molecular weight of krypton?
83.798 g/mol
How many grams are in 7.98 moles of krypton?
665.6 g
What is the formula for converting moles to grams?
mass = moles x molecular weight
