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Rus_ich [418]
2 years ago
5

Which of these pairs of atoms are isotopes?

Chemistry
1 answer:
Troyanec [42]2 years ago
6 0

Answer:

c

Explanation:

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Sulfur has 16 electrons. When it combines with magnesium. It acquires A -2 charge. How many electrons does it have now?
Rainbow [258]
18 electrons. With a -2 charge, that means it gains two electrons.
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3 years ago
According to table f which ions combine with chlorine ions to form an insoluble compound 1- Fe2+ions.
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How many moles of carbon are in 7.00 x 1023 atoms of carbon?
Andru [333]

Answer:

<h2>1.16 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{7 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{7}{6.02}  \\  = 1.162790....

We have the final answer as

<h3>1.16 moles</h3>

Hope this helps you

8 0
3 years ago
The role of chlorophyll during photosynthesis is to
Fudgin [204]

Answer:

Absorb light energy

Explanation:

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3 0
3 years ago
¿Que relación hay entre la masa y la materia?​
Mademuasel [1]

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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