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sergij07 [2.7K]
2 years ago
13

What is the number assigned to an element on the Periodic Table?

Chemistry
1 answer:
spayn [35]2 years ago
6 0

Answer:

Element Atomic Number One number you will find on all periodic tables is the atomic number for each element.

Explanation:

<em>hope it helps :))</em>

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Explanation:

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Question 3 0 / 1 point How many grams of carbon atoms are present in a sample of C3H8 if there are 4.10 moles of hydrogen atoms
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Answer:

18.45 g of C

Explanation:

This is a problem of rules of three:

1 mol of C₃H₈ contains 3 moles of C and 8 moles of H

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4.10 moles of H are contained in (4.1 . 1) /8 = 0.5125 moles

Now, If 1 mol of propane contains 3 moles of C

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1.5375 mol . 12 g /mol = 18.45 g

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