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Vladimir [108]
3 years ago
15

¿Que relación hay entre la masa y la materia?​

Chemistry
1 answer:
Mademuasel [1]3 years ago
4 0

Answer:

La masa como medida de la materia :La masa se relaciona con la cantidad de materia y su valor mide la inercia de un cuerpo, así como la acción gravitatoria que este ejerce.

Explanation:

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A 951g sample of carbon steel with a specific heat capacity of .49j is heated to 673k and quenched in oil. The steel cools to 52
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If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?
krok68 [10]

Answer:

\large\boxed{\large\boxed{0.64M}}

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

          \text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}

Substitute and solve for the molarity of the diluted solution:

           250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M

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Which of the following statements about the Earth’s atmosphere is true?
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Choose the correct total number of electron domains (bonding and nonbonding) about a central atom if the angle(s) between the el
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Answer:

The central atom has 3 electron domains.

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According to the Valence Shell electron pair repulsion theory (VSEPR) put forward by Gillespie and Nyholm in 1957, the shape of a molecule is determined by repulsion between all the electron pairs (electron domains) present in the valence shell.

The electron pairs or electron domains are known to position themselves as far apart in space as possible in order to minimize repulsions.

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