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btbam91
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I know this is probably a stupid question, but do I just find the volume of the sphere using the 1 micrometer and divide that quantity by the average distance cubed?
At an altitude of 100 km, the average distance between air molecules is approximately 3x10^-4 mm. Compute the number of molecules contained in a spherical volume of diameter 1 um(micrometer)
The number of molecules in a substance can be calculated using Avogadro's number, which is approximately 6.022 x 10^23. This number represents the number of particles (atoms or molecules) in one mole of a substance. To find the number of molecules, divide the given amount of the substance by its molar mass (in grams) and then multiply by Avogadro's number.
No, the number of molecules in a substance does not change as it is a constant value. However, the number of moles of a substance can change if the amount of the substance changes. This would result in a change in the number of molecules, but the value of Avogadro's number remains constant.
Avogadro's number is used because it is a convenient way to represent the extremely large number of molecules present in even small amounts of a substance. It allows for easier calculations and comparisons between different substances.
No, the number of molecules is a unitless quantity. It is simply a way to represent the number of particles present in a substance.
Yes, the number of molecules in a substance is dependent on its molar mass. Substances with a higher molar mass will have a smaller number of molecules compared to substances with a lower molar mass, even if they have the same amount (in moles).