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igor_vitrenko [27]
3 years ago
15

What is the number of valence electron of (Na). ?

Chemistry
1 answer:
sammy [17]3 years ago
3 0
There is 11 valence electrons in sodium (Na)
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Help please and thank you
Ipatiy [6.2K]

Answer:

Opcion D

Explanation:

Una desintegración beta es de a forma:

0

   \beta

-1

You can find this in opcion D

I hope I will help you : )

3 0
3 years ago
How many seconds does it take to deposit 0.94 g of Ni on a decorative drawer handle when 14.9 A is passed through a Ni(NO3)2 sol
Goshia [24]

Answer:

Time take to deposit Ni is 259.02 sec.

Explanation:

Given:

Current I = 14.9 A

Faraday constant = 96485 \frac{C}{mole}

Molar mass of Ni = 58.69 \frac{g}{mole}

Mass of Ni = 0.94 g

First find the no. moles in Ni solution,

Moles of Ni = \frac{0.94}{58.69}

                   = 0.02 mol

From the below reaction,

  Ni^{2+}  + 2e ⇆ Ni_{(s)}

Above reaction shows "1 mol of Ni^{2+} requires 2 mol of electron to form 1 mol of Ni_{(s)} "

So for finding charge flow in this reaction we write,

    = 0.02 \times \frac{2  }{1 }  \times 96485 \frac{C}{mol}

Charge flow = 3859.4 C

For finding time of reaction,

  I = \frac{q}{t}

Where q = charge flow

   t = \frac{q}{I}

   t = \frac{3859.4}{14.9}

   t = 259.02 sec

Therefore, time take to deposit Ni is 259.02 sec.

3 0
3 years ago
Check my answers please? Only 5...Will reward medal to best answer and perhaps become a fan! :)
stellarik [79]
The correct answer is <span>Fusion Curve</span>
5 0
3 years ago
The molecular weight of NaCl is 58.44 grams/mole. If you had a 1.0 molar solution (1.0 M), you would have to put 58.44 g of salt
Andre45 [30]

Answer:

5,844 grams of NaCl

Explanation:

Knowing the molecular weight 58,44 g/mole and saying 1 molar solution is 58,44 of NaCl in 1 liter of solution. 100 mL means 10% of the whole solution then we are going to have 10% of NaCl

58,44 x 0,1 = 5,844 grams of NaCl

7 0
3 years ago
A(n) ________ acid is an acid that can leave solution and enter the atmosphere. a(n) ________ acid is an acid that can leave sol
Aneli [31]

A volatile acid is an acid that can leave solution and enter the atmosphere.


7 0
3 years ago
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