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Zigmanuir [339]
3 years ago
12

How many molecules are there in 560 grams of CoCl2?​

Chemistry
1 answer:
Marrrta [24]3 years ago
5 0

Answer:

25.89  × 10²³ molecules

Explanation:

Given data:

Mass of CoCl₂ = 560 g

Number of molecules present = ?

Solution:

Number of moles of CoCl₂:

Number of moles = mass/molar mass

Number of moles = 560 g/ 129.84 g/mol

Number of moles = 4.3 mol

Avogadro number:

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.

1 mole = 6.022 × 10²³ molecules

4.3 mol ×  6.022 × 10²³ molecules /1 mol

25.89  × 10²³ molecules

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3 years ago
Which is a practical application of boiling-point elevation?
pishuonlain [190]
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7 0
3 years ago
Which phrases describe sedimentary rock? check all that apply.​
yuradex [85]

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Explanation:

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3 years ago
Photosenthisis is a process in which plants prepare foodusing carbon dioxide chloriphil and water in the presence of sunlight du
olchik [2.2K]

Answer:

During photosynthesis SOLAR enerrgy is transformed into CHEMICAL energy.

Explanation:

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3 years ago
A horizontal row on the periodic table is called a______________________? Please help !!!!!!!!
ad-work [718]

Answer:

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