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allochka39001 [22]
3 years ago
6

What is the relative atomic mass of ,A of X?

Chemistry
1 answer:
Fed [463]3 years ago
7 0
11 A n 8 g sample of oxygen atoms contains the same number of atoms as 16 g of element x. 
The question does not make sense. does it mean 11 g of A with 8 g Oxygen and 16 g X with 8 g Oxygen.

Does not make sense
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Which of these elements has two electrons in its outer p orbitals? A. helium (He) B. barium (Ba) C. nitrogen (N) D. silicon (Si)
Agata [3.3K]

Hid BadAssWithABow,

Your Question:

Which of these elements has two electrons in its outer p orbitals? A. helium (He) B. barium (Ba) C. nitrogen (N) D. silicon (Si) E. sulfur (S)

Answer:

A. helium (He)

The reason its helium is because helium has 2 electrons.

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3 years ago
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INSIG
vazorg [7]

Answer:

The given statement shows that the two families knew each other. Some people had left their home due to the war many years ago. Those who had stayed back thought that the ones who had left would never come back. That is why the woman feels surprised to see one of them come back. It also shows that selfishness of human behavior. People care for material things done for human beings. But it can't be said of all human beings. The narrator and her mother were totally different in their nature. They were trusting and loving human beings. Thus the given statement does give some clue about the story.

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3 0
3 years ago
Identify the parts of the atom that are labeled in the diagram
baherus [9]

Answer:

A- Nucleus

B-Energy levels

Explanation:

  • An atom refers to the smallest particle of an element that can take part in a chemical reaction.
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How many molecules are there in 79g of Fe2O3? how many atoms is this?
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There are approximately 160 grams in 1 mol of Fe2O3 molecules. Therefore, there would be 79/160= 0.49375 mols of Fe2O3 molecules in 79 grams. There are 5 atoms in total for each molecule of Fe2O3, therefore 79/160 * 5 = 79/32 = 2.46875 mols of atoms.
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