The diameter of the tungsten wire in a light bulb filament is bery 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 1,600 filaments to weigh an ounce! How many tungsten atoms are in a typical light bulb filament?
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5.76 multiplied by 10 to the 19th power. Labeled as atoms.
Find the atomic mass number of W. THen multipy that by the mass of a neutron (proton is about the same).
Then divide that into .0176grams. You may have to change units, depending on the mass units for the W atom.
To determine the number of tungsten atoms in a light bulb filament, we need to use the concept of Avogadro's number and the formula for calculating the number of atoms in a given mass.
Step 1: Calculate the molar mass of tungsten.
The molar mass of tungsten (W) is approximately 183.84 grams/mol.
Step 2: Calculate the number of moles of tungsten in the filament.
The mass of the filament is given as 0.0176 grams.
We can use the formula: n = mass / molar mass.
n = 0.0176 g / 183.84 g/mol.
Step 3: Calculate the number of tungsten atoms in the filament.
We know that 1 mole of any substance contains Avogadro's number of particles, which is approximately 6.022 x 10^23 particles/mol.
Therefore, the number of tungsten atoms in the filament is:
Number of atoms = n x Avogadro's number.
Substituting the values:
Number of tungsten atoms = (0.0176 g / 183.84 g/mol) x (6.022 x 10^23 atoms/mol).
Now, we can calculate this value to find the number of tungsten atoms in the filament.
moles W = grams/atomic mass. You have the grams and you can look up the atomic mass. Calculate moles W.
There are 6.02 x 10^23 atoms of W in a mole of W.