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GalinKa [24]
3 years ago
8

Describe the properties of noble gases. Based on their electronic arrangement, explain whether they can exist alone in nature.

Chemistry
1 answer:
Firdavs [7]3 years ago
5 0

Answer:

they have a full outer shell, and cannot live alone In nature as they cannot bind with other gases

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In the balanced chemical reaction for the combustion of acetylene (used in welding torches), determine at standard temperature a
Tpy6a [65]

Answer:

8L of CO2

Explanation:

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8 0
3 years ago
Calculate the number of moles<br> 41.0 g of Ca(NO3)2 <br> 1.48 g of Ca(OH)2 <br> 3.40 g of CaSO4
Lemur [1.5K]
First. moles is just a label for a number of things. just like a dozen = 12, a gross = 144, a mole = 6022 with another 20 zeros after the 2

next

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notice that I only gave 3 digits? that because of sig figs read the link below if you don't understand....

mw C5H12 = 5 x 12 + 12 x 1 = 72 g/mole

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I've also provided a link to a periodic table. if you need atomic weights click on any element and it will give you the
details.
8 0
3 years ago
Which of these elements has physical and chemical properties most similar to silicon (Si)?
siniylev [52]
In order from most to least similar:
1. Germanium
2. Lead
3. Phosphorus
4. Chlorine
The elements in the same column as the element you have are the most similar. The rows are not. For example, though chlorine and magnesium are in the same row, they have very different properties, whereas chlorine and fluorine more similar
6 0
3 years ago
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Forecasting the weather for a specific area is relatively easy because of all the technology that is available.
AleksAgata [21]

Answer:

A

Explanation:

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3 years ago
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A particular experiment requires 13.5 µl hydrochloric acid solution. if 250 ml hydrochloric acid solution is available, how many
ladessa [460]
The amount of HCl required for one experiment - 13.5 µl 
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