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ycow [4]
3 years ago
14

If Oxygen is a homonuclear diatomic molecule, why isn't it written as O2 on the table of elements?​

Chemistry
1 answer:
Reil [10]3 years ago
3 0

Explanation:

The table of elements is known as the periodic table of elements. The table follows the periodic law which states:

   "the properties of elements are a periodic function of their atomic number"

Modern periodic table is based on the arrangement of elements using their atomic numbers.

  • The periodic table is only meant for atoms of elements
  • All atoms do not have bonds in between them.
  • A molecule cannot fit into the periodic table because it will flaunt the periodic law.
  • A molecule does not have atomic number.

Learn more:

Periodic table brainly.com/question/8543126

#learnwithBrainly

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What is the steps of <br> Photosynthesis?
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How many moles of copper are present in 75.0g Cu? Show your complete calculation and give the answer in the correct number of si
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Answer:

The answer to your question is 1.2 moles of copper

Explanation:

Data

mass of copper = 75 g

moles = ?

Process

1.- Look in the periodic table for the atomic mass of copper.

Atomic mass = 63.55 g/mol

2.- Use proportions to determine the moles of copper in 75 g

                          63.55 g of copper -------------------- 1 mol

                          75 g of copper       --------------------  x

Use cross multiplication

                          x = (75 x 1) / 63.55

                          x = 75 / 63.55

                          x = 1.18 moles ≈ 1.2 moles of copper

3 0
4 years ago
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C3H8 (g)+ 502 (g)  3CO2 (g) + 4 H2O (g) + 531 kcal
aniked [119]

Answer:

Exotérmica.

Explanation:

¡Hola!

En este caso, dado que la mayoría de reacciones de combustión son exotérmicas, al generar calor en los productos, es posible inferir que esta reacción, referida a la combustion de metano es exotérmica debido a lo anteriormente mencionado, ya que el término de energía de reacción, 531 kcal, está al lado de los productos, lo que quiere decir que es energía generada.

¡Saludos!  

5 0
3 years ago
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