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vichka [17]
3 years ago
12

Describe dmitri mendleev 's periodic table ​

Chemistry
1 answer:
ELEN [110]3 years ago
8 0

Answer:

He noted that repeating patterns of behavior could be seen in the way elements combined with each other. He included holes in his table and predicted their properties. He is recognized as the father of the modern periodic table.**Hope it was right. And that it helped!**

Explanation:

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Answer:

18.22874999999973

I recommend you to round the nearest 1 d.p

Explanation:

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Read 2 more answers
*PLEASE HELP ASAP*
dimulka [17.4K]
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3 years ago
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natulia [17]

Answer:

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8 0
3 years ago
How many moles of carbon atoms are present in a piece f diamond?
NNADVOKAT [17]
Diamond is an allotrope of carbon; that just means it is a different crystalline structure, but pure diamond contains only carbon atoms. (unrelated, but interesting - colored diamonds come from impurities like boron and nitrogen in the crystal structure!) The molar mass of carbon is 12.01 g/mol. You can find the molar mass by looking at the periodic table. If you look under number 6, Carbon, you should see the atomic weight right under it: 12.01. The molar mass is this same number, in grams. That means that one mole, or 6.022E23 carbon atoms, weigh 12.01 grams. 
<span>But you don't have one mole. You only have 2 grams. </span>
<span>So how many moles do you have? 2 grams out of 12 grams. 2/12 = 1/6 or 0.167. You have 1/6th of a mole. One mole is 6.022E23 atoms, but you only have 1/6th of that. I hope that thinking about it stepwise like this makes sense to you. It works the same for other atoms and molecules too. In a molecule, you would just add up the molar mass of all the component atoms. I hope this helps.







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3 years ago
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Anika [276]

Answer:

-

Explanation:

As the piece of metal skitters across the surface of the water in a beaker and — particularly in the case of potassium — it appears to catch fire, it is not obvious that the explanation for both phenomena lies in the production of hydrogen gas.

3 0
2 years ago
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