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RSB [31]
2 years ago
13

Comprised of protons, neutrons, and electrons.

Chemistry
1 answer:
dsp732 years ago
6 0

Answer:

The atom

Explanation:

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Who or what has had the biggest influence on your thoughts about chemistry?
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My chemistry teacher from my sophomore year.

Explanation:

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4 Recall What holds ionic compounds<br> together?
Kazeer [188]

Answer:

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3 years ago
A scientist has 207.45g of H2O in a beaker. How many water molecules are in the beaker?
Tasya [4]

Answer:

6.94 x 10²⁴molecules

Explanation:

Given parameters:

Mass of water  = 207.45g

Unknown:

Number of molecules  = ?

Solution:

To solve this problem, we must understand:

      1 mole of a substance  contains 6.02 x 10²³ molecules

Now, first find the number of moles of water;

 Number of moles  = \frac{mass}{molar mass}  

 Molar mass of water  = 2(1) + 16  = 18g/mol

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So;

          1 mole of a substance  contains 6.02 x 10²³ molecules

       11.53moles of carbon dioxide will contain 11.53 x  6.02 x 10²³

                                                                 = 6.94 x 10²⁴molecules

4 0
2 years ago
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