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Harlamova29_29 [7]
3 years ago
12

____Na + ____Cl2 ---> ____NaCl

Chemistry
2 answers:
Zepler [3.9K]3 years ago
7 0
2 Na + 1 CI2 —> 2 NaCI
IrinaVladis [17]3 years ago
6 0
Here is the answer of the given question

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1.6x10^23 lead atoms. Find the weight in grams
Ber [7]
Moles of lead(Pb) = 1.6x10^23/6.02x10^23 = 0.265 moles.

Weight of lead = moles x atomic weight of lead
                         =  0.265x207.2
                         =  54.908 grams.

Hope this helps!
5 0
3 years ago
What energy is based on height?
raketka [301]

Answer:

Potential Energy

Explanation:

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Looking across period 4 of the periodic table, potassium (atomic number 19) is followed by calcium (atomic number 20), which is
Anika [276]
Atomic radius increases as you move left across the periodic table, therefore, potassium will have the largest atomic radius
3 0
3 years ago
The acid-dissociation constant of hydrocyanic acid (hcn) at 25.0 °c is 4.9 ⋅ 10−10. what is the ph of an aqueous solution of 0.0
vodomira [7]
According to the reaction equation:

and by using ICE table:

              CN-  + H2O ↔ HCN  + OH- 

initial  0.08                        0          0

change -X                        +X          +X

Equ    (0.08-X)                    X            X

so from the equilibrium equation, we can get Ka expression

when Ka = [HCN] [OH-]/[CN-]

when Ka = Kw/Kb

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               = 2 x 10^-5

So, by substitution:

2 x 10^-5 = X^2 / (0.08 - X)

X= 0.0013

∴ [OH] = X = 0.0013 

∴ POH = -㏒[OH]

            = -㏒0.0013

            = 2.886 

∴ PH = 14 - POH

         = 14 - 2.886 = 11.11
5 0
3 years ago
Determine the number of sub shells and orbital in the fifth main shell​
Black_prince [1.1K]

Answer: maximum no. is 8 in 5th shell

Explanation:

6 0
3 years ago
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