Respuesta :
Answer:
79.7 mol.
Explanation:
- It is known that every 1.0 mole of compound or element contains Avogadro's number (6.022 x 10²³) of molecules or atoms.
Using cross multiplication:
1.0 mole of tungsten contains → 6.022 x 10²³ atoms.
??? mole of tungsten contains → 4.8 x 10²⁵ atoms.
∴ The no. of moles of tungsten contains (4.8 x 10²⁵ atoms) = (1.0 mol)(4.8 x 10²⁵ atoms)/(6.022 x 10²³ atoms) = 79.7 mol.
There are 79.7 moles of tungsten atoms in [tex]4.8 \times 10^{25}[/tex]
Given the following parameter:
Moles of tungsten = [tex]4.8 \times 10^{25}atoms[/tex]
It is known that every 1.0 mole of compound or element contains Avogadro's number (6.022 x 10²³) of molecules or atoms. Hence:
1 mole = 6.022 x 10²³atoms
x = 4.8 x 10²⁵ atoms
Cross multiply:
6.022 × 10²³x = 4.8 x 10²⁵
x = 4.8 x 10²⁵/6.022 × 10²³
x = 0.797×10²
x = 79.7 moles
This shows that there are 79.7 moles of tungsten atoms in [tex]4.8 \times 10^{25}[/tex]
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