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11Alexandr11 [23.1K]
3 years ago
10

Each square on the periodic table includes lots of information about ?

Chemistry
1 answer:
Alja [10]3 years ago
4 0
The element. in each square you can find the amount of subatomic particles, the mass, the atomic number, etc...
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How do the ongoing processes of scientific investigation and technological design interact with each other?
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Scientific investigation helps to discover new information, such as greater insight into how the world works. This information can be applied to technological design, illuminating new ways to do things. </span>
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Uranium atoms each have 92 protons. How many protons does each U-238 atom have?
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How does the freezing and boiling point of ocean water compare to those of distilled water?
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3 years ago
How many atoms are present in a sample of Potassium (K) weighing 33.49g?
madam [21]

Answer:

5.158 × 10²³ atoms K

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

<u>Step 1: Define</u>

33.49 g K

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of K - 39.10 g/mol

<u>Step 3: Convert</u>

<u />33.49 \ g \ K(\frac{1 \ mol \ K}{39.10 \ g \ K} )(\frac{6.022 \cdot 10^{23} \ atoms \ K}{1 \ mol \ K} ) = 5.15797 × 10²³ atoms K

<u>Step 4: Check</u>

<em>We are given 4 sig figs. Follow sig figs and round.</em>

5.15797 × 10²³ atoms K ≈ 5.158 × 10²³ atoms K

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In a step-down transformer, which side has more wire loops?
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