Which of the following types of radiation from the Sun has the longest wavelength?
A) gamma
B) infrared
C) ultraviolet
D) visible

Explanation:

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Answer:

One mole of anything is 6.022×1023 everythings, including atoms. Multiply the moles Fe by 6.022×1023 atoms/mol. 3.77mol Fe ×6.022×1023atoms Fe1mol Fe =2.27×1024 atoms Fe rounded to three significant figures.

The number of atoms present is 1.5 moles of iron is 9.0 ×10²³ atoms

From the question,

We are to determine the number of atoms present in 1.5 moles of iron.

From the formula,

[tex]Number\ of\ moles = \frac{Number\ of\ atoms}{Avogadro's\ constant}[/tex]

Then, we can write that

Number of atoms = Number of moles × Avogadro's constant

∴ Number of atoms of iron present = 1.5 × 6.022×10²³

Number of atoms of iron present = 9.033 ×10²³ atoms

Number of atoms of iron present ≅ 9.0 ×10²³ atoms

Hence, the number of atoms present is 1.5 moles of iron is 9.0 ×10²³ atoms

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Answer:

Answer. 0.400 mol N2O5 contains 2.41 molecules of N2O5

Explanation:

The most reactive non metal is called Astantine(As)

Answer:

Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element's atomic number on the Periodic Table

Explanation:

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