Respuesta :

transitionstate

Answer:

                      3.50 × 10²³ Atoms of Se

Explanation:

                    As we know that 1 mole of any substance contains exactly 6.022 × 10²³ particles which is also called as Avogadro's Number. So in order to calculate the number of particles (atoms) contained by 0.580 moles of Se, we will use following relation,

          Moles  =  Number of Atoms ÷ 6.022 × 10²³ Atoms.mol⁻¹

Solving for Number of Atoms,

          Number of Atoms  =  Moles × 6.022 × 10²³ Atoms.mol⁻¹

Putting values,

          Number of Atoms  =  0.580 mol × 6.022 × 10²³ Atoms.mol⁻¹

          Number of Atoms  = 3.50 × 10²³ Atoms

Hence,

          There are 3.50 × 10²³ atoms present in 0.280 moles of Se.

tutorAnne

3.4916 x 10²³ atoms of Selenium are in 0.58 mol of Se?​

For every mole of any substance, 6.022 × 10²³ particles/atoms, called the Avogadro's Number is contained . To calculate the number of particles (atoms) contained in  0.580 moles of Se, we can say

    1 mol Se------------- 6.02x10²³ atoms

Therefore,  0.58  mol -------------- ??

0.58 x ( 6.02x10²³ ) / 1 => 3.4916 x 10²³ atoms of Selenium.

See more here: https://brainly.com/question/2658356

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