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ratelena [41]
2 years ago
8

Describe the quantitative characteristics of all chemical reactions. Explain how we can use these features to make quantitative

predictions for a specific reaction.
Chemistry
1 answer:
san4es73 [151]2 years ago
3 0
Answer Chemical reaction quantitatively depend on the reactant and product molecule
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What is the mass of 1.2 x 1023 atoms of arsenic?
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Answer:

14.93 g

Explanation:

First we <u>convert 1.2 x 10²³ atoms of arsenic (As) into moles</u>, using <em>Avogadro's number</em>:

  • 1.2 x 10²³ atoms ÷ 6.023x10²³ atoms/mol = 0.199 mol As

Then we can<u> calculate the mass of 0.199 moles of arsenic</u>, using its<em> molar mass</em>:

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Thus, 1.2x10²³ atoms of arsenic weigh 14.93 grams.

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Water has a density of 1.0 g/cm3. Glycerin, a liquid used in some soaps, has a density of 1.26 g/cm3. If an object sinks in wate
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s an example, the ground state configuration of the sodium atom is 1s22s22p63s1, as deduced from the Aufbau principle (see below). The first excited state is obtained by promoting a 3s electron to the 3p orbital, to obtain the 1s22s22p63p1 configuration, abbreviated as the 3p level.

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