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Veronika [31]
2 years ago
11

Two students made a model of the world's tallest building, the Burj Khalifa in Dubai. The scale of the model is 1:400. The stude

nts' model has a height of 2.07 m. How tall is the real building? O A. 0.005 m O B. 400 m O C. 193 m O D. 828 m ​
Chemistry
1 answer:
Anna [14]2 years ago
4 0

Answer:D

Explanation:

828m

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Answer:

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3 years ago
sodium chloride is made up of sodium and chlorine, but it isn't a poisonous gas and it doesn't explode in water. explain why.
jenyasd209 [6]

sodium chloride is a compound that is stable because its constituent elements namely chlorine and sodium have formed ionic bonds with each other and their outer energy shells are filled with 8 electrons. 

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Chlorine at room temperature is a poisonous gas. It has 17 electrons in the arrangement 2:8:7 . The outermost shell has 7 electrons and so this element is fairly stable but will readily react with human lungs with fatal consequences.

So each of these two elements on their own are deadly, but when the two react together, sodium gives up its single electron on the outer energy shell to chlorine which readily accepts it and fills its outer shell to make 8  forming ionic bonds and is thus  the two are completely stable and cannot explode or react in any other way because the outer shell of each of them is now filled with 8 electrons.


7 0
3 years ago
What are the covalent bonds called that form between atoms of different electronegativities?
ZanzabumX [31]
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What is the empirical formula for ribose (C5H10O5)?

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3 0
3 years ago
What is the relationship of work with distance and the force?
kakasveta [241]

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3 0
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