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telo118 [61]
3 years ago
12

_____ determines the type of element an atom is. The number of neutrons The number of electrons The number of protons The number

of atoms
Chemistry
2 answers:
Yakvenalex [24]3 years ago
4 0

<u>Answer:</u> The correct answer is number of protons.

<u>Explanation:</u>

Atomic number is defined as the number of protons that are present in an atom.  It is represented by the symbol 'Z'.

Atomic number = number of protons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.  It is represented by the symbol 'A'.

Mass number = Number of protons + Number of neutron

An ion is formed when an atom looses or gains electron.

  • When an atom looses electrons, it will form a positive ion known as cation.
  • When an atom gains electrons, it will form a negative ion known as anion.

Every element has a unique number known as atomic number. This number is identified by the number of protons that are present in an atom.

Hence, the correct answer is number of protons.

julia-pushkina [17]3 years ago
3 0

the atomic number determines the tyoe of element an atom is.

the atomic number means the number of protons in an atom.

atoms of different elements have different numbers of protons and different atomic numbers so you can identify the element based on the atomic number

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Answer:

A) Fission

Explanation:

Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

6 0
3 years ago
Calculate the solubility of benzene in water at 25 c in ppm. the required henry's law constant is 5.6 bar/mol/kg and benzene's s
kap26 [50]

The relationship between pressure and solubility of the gas is given by Henry's law as:

S_g = kP_g

where,

S_g is the solubility of the gas.

k is proportionality constant i.e. Henry's constant.

P_g is pressure of the gas.

k = 5.6 bar/mol/kg (given)

P_g = 0.13 bar (given)

Substituting the values,

S_g = 5.6 bar/mol/kg\times 0.13 bar = 0.728 mole/kg

To convert mole/kg to g/kg:

Molar mass of benzene, C_6H_6 = 6\times 12+6\times 1 = 78 g/mol

0.728\times 78 = 56.784 g/kg

Now for converting into ppm:

Since, 1 ppm = 0.001 g/kg

So, 56.784\times 1000 = 56784 ppm.

Hence, the solubility of benzene in water at 25^{o} C in ppm is 56784 ppm.


7 0
3 years ago
CH4(g) + H2O(g) CO(g) + 3H2(g)
boyakko [2]
Presuming the arrow is between H20 and CO

On the left there are 2 gas moles.
On the right there are 4 gas moles.

The equilibrium will shift to the side with the most no. He gas moles when pressure is decreased.

Therefore the answer is A, since 4>2.

If you have any questions, feel free to ask
5 0
3 years ago
A chunk of limestone, which is calcium carbonate, reacts with acid. How might you increase the rate of this reaction?
pantera1 [17]
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8 0
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How is light produced in an atom?
Nadya [2.5K]

Answer:

light is the result of electrons moving between defined energy levels in an atom called shells.

Explanation:

when something exited an atom like collision with another atom or a chemical reaction, an electron may absorb energy boosting it to a higher level shell.

3 0
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