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solong [7]
3 years ago
15

Manganese atom has 30 neutrons and atomic number 25

Chemistry
2 answers:
marysya [2.9K]3 years ago
7 0

Answer:

the most common oxidation no.of manganese is +2 +3 +4 +6 +7

Zanzabum3 years ago
6 0
+2+3+4+5+6+7

Mostly the anwser
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2 radioactive isotopes of oxygen?
Lemur [1.5K]
<span>Oxygen-15 is an isotope of oxygen, frequently used in positron emission tomography, or PET imaging. It has 8 protons, 7 neutrons, and 8 electrons. The total atomic mass is 15.0030654 amu. It has a half-life of 122.24 seconds.</span>
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3 years ago
Traits are characteristics that are
skelet666 [1.2K]

developed as the organism grows

Explanation:

Traits are characteristics that are developed as an organism grows.

The term is mostly used in the field of genetics to describe the attribute of an organism.

  • Traits are usually synonymous to phenotypes.
  • They are the outward expression of a gene.
  • These characters are developed as an organism grows as influenced by the environment.
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learn more:

Polygenetic trait brainly.com/question/4161162

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7 0
3 years ago
Jason combines the two intermediate steps shown.
Snowcat [4.5K]

Answer:

Place two of them as reactants.

Explanation:

  • We have the two steps of reactions:

1) N₂(g ) + O₂(g) → 2NO(g).

2) 2NO(g )+ O₂(g) → 2NO₂(g).

  • Adding the two equation with cancelling the intermediate (NO), we get:

<em>N₂(g ) + 2O₂(g) → 2NO₂(g).</em>

<em></em>

NO is cancelled out because there is one in each equation in the products side in eq. 1 and in oriduct side in eq. 2.

<em>So, we place two of oxygen as reactants.</em>

7 0
3 years ago
Read 2 more answers
Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100 cm3. What is the concentration of nitrate io
Soloha48 [4]

Answer : The correct option is, (b) 22.5 M

Explanation : Given,

Mass of calcium nitrate tetrahydrate = 266 g

Molar mass of calcium nitrate tetrahydrate  = 236.15 g/mole

Volume of solution = 100cm^3=100mL

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

Formula used :

Molarity=\frac{\text{Mass of calcium nitrate tetrahydrate }\times 1000}{\text{Molar mass of calcium nitrate tetrahydrate }\times \text{volume of solution in ml}}

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

Molarity=\frac{266g\times 1000}{236.15g/mole\times 100ml}=11.26mole/L=11.26M

As calcium nitrate tetrahydrate dissociate to give 1 mole of calcium ion, 2 moles of nitrate ion and 4 moles of water.

The concentration of nitrate ion = 2\times 11.26M=22.5M

Thus, the concentration of nitrate ion is, 22.5 M

4 0
3 years ago
Why is there DNA in our food?
sukhopar [10]

Answer:

probably because most of our food comes from animals-

Explanation:

3 0
2 years ago
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