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lorasvet [3.4K]
3 years ago
13

What group of elements has the most stable arrangement in their outer energy level?

Chemistry
1 answer:
irakobra [83]3 years ago
6 0
What group of elements has the most stable arrangement in their outer energy level?

Noble gases

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In humans, height, skin color, hair color, and eye color are examples of polygenic traits.

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9 months ago
Which best represents the law of conservation of mass?
makkiz [27]
Mass of reactants &gt mass of products
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lions [1.4K]
Yes..? I don’t understand what you’re trying to ask mate.
5 0
3 years ago
In the electron cloud model, the electron cloud is denser in some locations than in others.
Sonbull [250]
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8 0
2 years ago
1. How many molecules are in 240g of sulfuric acid?
Soloha48 [4]

Answer:

14.8 × 10²³ molecules

Explanation:

Given data:

Mass of sulfuric acid = 240 g

Number of molecules = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of moles of sulfuric acid

<em>Number of moles = mass/ molar mass</em>

Number of moles =  240 g/ 98 g/mol

Number of moles = 2.45 mol

Number of molecules:

1 mole = 6.022 × 10²³ molecules

2.45 × 6.022 × 10²³ molecules

14.8 × 10²³ molecules

3 0
3 years ago
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