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oee [108]
3 years ago
5

The Lewis dot model of a metal atom has two dots. Which of the following is true about the atom?

Chemistry
2 answers:
a_sh-v [17]3 years ago
7 0

Answer:

It is present in the second group of the periodic table

Explanation:

podryga [215]3 years ago
6 0

Answer: that there are two valence electrons

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Why don’t you just look it up
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Which one of the following statements explains why mass is lost when a student heats a sample of BaCl₂ • 2H₂O crystals?
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3 years ago
Consider the calculation of the pressure in kilopascals exerted by 1.25 g of nitrogen gas in a flask of volume 250 mL (0.250 dm3
Harrizon [31]

The amount of the nitrogen gas, N₂ molecules present is 2.68×10²² molecules

<h3>Avogadro's hypothesis </h3>

1 mole of N₂ = 6.02×10²³ molecules

<h3>How to determine the mole of N₂</h3>

We'll begin by calculating the number of mole of N₂. This can be obtained as follow:

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  • Molar mass of N₂ = 28.02 g/mol
  • Mole of N₂ =?

Mole = mass / molar mass

Mole of N₂ = 1.25 / 28.02

Mole of N₂ = 0.0446 mole

<h3>How to determine the molecules of N₂ present</h3>

From Avogadro's hypothesis,

1 mole of N₂ = 6.02×10²³ molecules

Therefore,

0.0446 mole N₂ = 0.0446 × 6.02×10²³

0.0446 mole N₂ = 2.68×10²² molecules

Thus, the molecules of N₂ present is 2.68×10²² molecules

Learn more about Avogadro's number:

brainly.com/question/26141731

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The energy a molecule contains due to its constant random motion is known as
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