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sesenic [268]
2 years ago
14

Radioisotopes are unstable because they contain an excess number of:.

Chemistry
1 answer:
myrzilka [38]2 years ago
4 0
Neutrons.

Not sure if you need a full explanation but let me know if you do :]
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¿En qué campos de la investigación se llevan a cabo la mayor parte de técnicas relacionadas con la biotecnología?
bekas [8.4K]
Can’t understand question. I don’t know Spanish
5 0
3 years ago
Physical Meaning of pKa Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa = 4.86); 0
ser-zykov [4K]

Answer:

<em>The solution with the lowest pH is 0.1 M HCl.</em>

Explanation:

Since the three solutions have the same concentration (0,1M) it is only necessary to look at the pKa of each solution.

Also, knowing that a higher pKa means a lower Ka, because pKa = -Log (Ka). Thus, a lower Ka means a lower concentration of protons with a higher pH ( pH = -Log [H+].

The HCl doesn't have a pKa because is a strong acid that dissociates completely. Therefore, this solution produces a lower pH. Looking at the pKa of acetic acid and formic acid solutions, the second with the lowest pH is the formic acid solutions and the higher pH is for the acetic acid solution.

3 0
3 years ago
A chart that organizes elements by their chemical properties and increasing atomic number is the
asambeis [7]
Periodic table!

The periodic table organizes elements by their chemical properties (mainly through vertical columns known as groups) and increasing atomic number. 


8 0
3 years ago
The Average atomic mass
lina2011 [118]

Answer:

the average mass of the atoms of an element measured in an atomic mass unit

Explanation:

5 0
2 years ago
How many liters of a 0.0550 M NaF solution contain 0.163 moles of NaF?
Kobotan [32]

Answer : The volume of solution will be 2.96 liters.

Explanation :

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

In this question, the solute is NaF.

Now put all the given values in this formula, we get:

0.0550M=\frac{0.163mole}{\text{Volume of solution (in L)}}

\text{Volume of solution (in L)}=\frac{0.163mole}{0.0550M}

\text{Volume of solution (in L)}=2.96L

Therefore, the volume of solution will be 2.96 liters.

3 0
3 years ago
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