Answer:6.42 ppm
Explanation:ppm = (g soluto/g soluzione) ×1000000
Marine Biologist, astronomer and geologist
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The number of atoms in 92.6 mg of NH₄NO₂ is 8.714 x 10²³.
<h3>What are atoms?</h3>
Atoms are the basic unit of all matter. They join and form a matter. There may be similar or different types of atoms in one compound.
Given, the mass of NH₄NO₂ is 92.6 mg
The molar mass of NH₄NO₂ is 64.0 gm/mol
a. First, we calculate the number of moles:
moles of NH₄NO₂ = mass / molar mass
92.6 / 64.0 = 1.4468 mol
Number of moles of NH₄NO₂ is 1.4468 mol
b. Now to calculate the number of atoms:
Moles x Avogadro no. = 1.4468 x 6.023 x 10²³ = 8.714 x 10²³
Thus, the number of N atoms in 92.6 mg of NH₄NO₂ is 8.714 x 10²³
To learn more about moles, refer to the link:
brainly.com/question/24175158
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<span>The substance that is produced at the cathode during the electrolysis of a mixture of molten calcium bromide, cabr2(I), and molten magnesium iodide, mgi2(I), can be expressed as Ca2+ + 2eâ’ --> Ca. At the anode, the substance can be expressed as 2Brâ’ â’ 2eâ’ --> Br2. At the cathode for magnesium iodide can be expressed as Mg2+ + 2 eâ’ --> Mg, and 2 Iâ’ â’ 2 eâ’ --> I2 at the anode.</span>
Atomic number of F = 9.
Atomic number of Na = 11.
Atomic number of F + Atomic number of Na = 9+11 = 20
Atomic number of Ca = 20
Therefore the atomic number of F plus the atomic number of Na equals the atomic number of Ca.
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