1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rzqust [24]
2 years ago
5

What’s the isotopic symbol for sodium

Chemistry
2 answers:
erastovalidia [21]2 years ago
6 0
Sodium<span> has one naturally occurring </span>isotope<span>. The </span>nucleus<span> of this isotope contains 11 </span>protons<span> and 12 </span>neutrons<span> and is not radioactive. There are 18 other known isotopes of sodium. All are radioactive. Sodium-22, sodium's most stable radioactive isotope, has a </span>half-life<span> of 2.6 year</span>
crimeas [40]2 years ago
5 0
Here is how you would write the isotopic symbol for sodium (see images attached): 

You might be interested in
Calculate the pH of each solution at 25∘C
JulijaS [17]

Answer: pH of HCl =5, HNO3 = 1,

NaOH = 9, KOH = 12

Explanation:

pH = -log [H+ ]

1. 1.0 x 10^-5 M HCl

pH = - log (1.0 x 10^-5)

= 5 - log 1 = 5

2. 0.1 M HNO3

pH = - log (1.0 x 10 ^ -1)

pH = 1 - log 1 = 1

3. 1.0 x 10^-5 NaOH

pOH = - log (1.0 x 10^-5)

pOH = 5 - log 1 = 5

pH + pOH = 14

Therefore , pH = 14 - 5 = 9

4. 0.01 M KOH

pOH = - log ( 1.0 x 10^ -2)

= 2 - log 1 = 2

pH + pOH = 14

Therefore, pH = 14 - 2 = 12

8 0
3 years ago
What is pseudo - order reaction​
zubka84 [21]

Explanation:

The reactions which are not truly of first order but become reactions of first order under certain conditions are called pseudo first order reactions.

For example, hydrolysis of ester

7 0
2 years ago
Read 2 more answers
How does soil form bare rock???
RSB [31]
Weathering and erosion produce ever smaller rock particles which,

when mixed with dust and decayed organic matter over time , 

result in different types of soil . 

[hope this helps]



3 0
3 years ago
Calculate the ph of sweater which has a hydrogen ion concentration of 1 times 10 to the power of 8
telo118 [61]

Answer:

The pH of the sweater containing Hydrogen ion concentration

[H^{+}]=1\times 10^{-8} is

<u>8</u>

<u></u>

Explanation:

pH = It is the negative logarithm of activity (concentration) of hydrogen ions.

pH = -log([H+])

Now, In the question the concentration of [H+] ions is :

[H^{+}]=1\times 10^{-8}

pH = -log(1\times 10^{-8})

use the relation:

log(10^{-a})=a

pH= -(-8)

pH = 8

Note : <em><u> 1 times 10 to the power of 8 must be" 1 times 10 to the power of -8"</u></em>

If the concentration is

[H^{+}]=1\times 10^{8}

Then pH = -8 , which is not possible . So in that  case the pH calculation is by other method

5 0
3 years ago
In models of molecules, spheres of different colors and
AlladinOne [14]

Answer:

D

Explanation:

According to this question, each model of molecules in the options contains spheres of different colors and sizes representing different types of atoms. The atoms of the same element are the spheres of same color and size while atoms of different element are of different color or size.

Therefore, the model showing a molecule of a substance that is made up of three elements is model D because it is made up of three distinct spheres representing atoms of each element.

- The red sphere is the atom of the first element

- The big dark sphere is the atom of the second element

- The small white sphere is the atom of the third element

3 0
3 years ago
Other questions:
  • Iron (Fe) undergoes an allotropic transformation at 912°C: upon heating from a BCC (α phase) to an FCC (γ phase). Accompanying t
    15·2 answers
  • Bohr looked to improve upon Rutherford’s model of the atom because Bohr thought that Rutherford’s model:
    13·1 answer
  • In a galvanic cell, electrons are transferred from one half cell to the other as the redox reaction progresses.
    7·2 answers
  • Calculate the wavelength of the light emitted when an electron in a one-dimensional box of length 5.4 nmnm makes a transition fr
    14·1 answer
  • Please Help Q 4.How many moles are there in 2.4 x 10 24 atoms of He?
    11·2 answers
  • How many moles CH3OH are in 14.8 g CH3OH?<br>​
    13·1 answer
  • Explain in terms of atomic structure why the radius of a cesium ion in cesium chloride is smaller than the radius of a cesium at
    8·1 answer
  • Which reactant in each of the following pairs is more nucleophilic? Explain.a. -NH2 or NH3b. H20 or CH3CO2-c. BF3 or F-d. (CH3)3
    14·1 answer
  • Why does a planet stay in orbit?
    14·2 answers
  • What do blizzards consist of? (Select all that apply)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!