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Lina20 [59]
3 years ago
6

Write the electron configuration, the orbital notation, and the noble gas notation for the following elements:

Chemistry
1 answer:
V125BC [204]3 years ago
7 0

Answer:

See explanation

Explanation:

The electron configuration of an atom means a detailed arrangement of the electrons in the atom in orbitals. It normally begins from the least energetic orbitals to the most energetic orbital.

For each of the elements, their electronic configuration in terms of the nearest noble gas is shown below;

P - [Ne] 3s2 3p3

I- [Kr] 4d10 5s2 5p5

Pb- [Xe] 4f14 5d10 6s2 6p2

F- [He] 2s2 2p5

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2 years ago
Calculate the mass in mg of the aspirin tablet that contains 5.0 grains of aspirin . Assume 1 pound contains 7000 grains.
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Answer:

323.99 mg

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1\ \text{grain}=\dfrac{1}{7000}\ \text{pounds}

5\ \text{grain}=\dfrac{1}{7000}\times 5\ \text{pounds}\\\\=\dfrac{1}{1400}\ \text{pounds}

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Hence, 4 grains of aspirin contains 323.99 mg.

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<span>Yes, mass is conserved. When sodium hydroxide (clear solution) and copper sulfate (blue solution) are mixed, they form a copper hydroxide (a blue solid) and sodium sulfate (a clear solution). This can be tested simply. First weigh the masses (10 g and 57 g, which totals 67 g)) of the two starting solutions prior to mixing. Then mix and allow the reaction to occur and weigh the mass of the mixture (10g + 57 g = 67 g). The two solutions should have the same mass and therefore demonstrate conservation of mass.</span>
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