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ayoismeisalex
15.01.2020 •
Chemistry
The diameter of the tungsten wire in a lightbulb filament is very small, less than two thousandths of an inch, or about 1/20 mm. the mass of the filament is so very small - 0.0176 grams - that it would take 1600 filaments to weigh an ounce! how many tungsten atoms are in a typical lightbulb filament?
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Ответ:
A typical lightbulb filament, whose mass is 0.0176 g, contains 5.76 × 10¹⁹ atoms of tungsten.
The mass of a typical lightbulb filament of tungsten is 0.0176 grams. We can convert 0.0176 g to moles using the molar mass of tungsten (183.84 g/mol).
To convert 9.57 × 10⁻⁵ mol to atoms, we will use Avogadro's number: there are 6.02 × 10²³ atoms in 1 mole of atoms.
A typical lightbulb filament, whose mass is 0.0176 g, contains 5.76 × 10¹⁹ atoms of tungsten.
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Ответ:
The number of tungsten Atoms in a typical light bulb filament is
5.76 ×
atoms of W
Explanation:
Write the given values of the problem
The diameter the tungsten wire in a light bulb filament Tungsten element W : molar mass = 183.84 g / mol
0.0176 g W ×
= 0.000096 mol W
0.000096 mol W ×
}{1 mol W}" alt="10^{23 atoms}" />}{1 mol W}" />
= 5.76 ×
atoms of W
Ответ:
true
Explanation: