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2 years ago

How many grams in 1.61 x 1023 molecules of water (H2O)

1 answer:

8 0

Taking into account the definition of Avogadro's number and molar mass, 4.806 grams of water are present in 1.61×10²³ molecules.

<h3>Definition of Avogadro's Number</h3>

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

<h3>Definition of molar mass</h3>

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

<h3>Mass of water</h3>

Taking into account the definition of Avogadro's Number, you can apply the following rule of three: if 6.023×10²³ molecules are contained in 1 mole of water, then 1.61×10²³ molecules are contained in how many moles of water?

amount of moles of water= (1.61×10²³ molecules× 1 mole)÷ 6.023×10²³ molecules

<u><em>amount of moles of water= 0.267 moles</em></u>

Now, taking into account the definition of molar mass, and knowing that the molar mass of water is 18 g/mole, you can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 18 grams, 0.267 moles of the compound contains how much mass?

$mass= \frac{0.267 molesx 18 grams}{1 mole}$

<u><em>mass= 4.806 grams</em></u>

Finally, 4.806 grams of water are present in 1.61×10²³ molecules.

Learn more about

Avogadro's Number:

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molar mass:

brainly.com/question/5216907

brainly.com/question/11209783

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(1) This reaction is a combustion reaction.

(2) This reaction is a decomposition reaction.

(3) This reaction is a combustion reaction.

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(5) This reaction is a combination reaction.

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Combination reaction : It is a type pf reaction in which the two or more molecules combine to form a larger single molecule as a product.

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This reaction is a combustion reaction.

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This reaction is a decomposition reaction.

3. $C_5H_6O(l)+O_2(g)\rightarrow CO_2(g)+H_2O(g)$

This reaction is a combustion reaction.

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4 years ago

Imagine you have two beakers. Both beakers are filled with the same amount of water. The water in both beakers is the same tempe

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