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neonofarm [45]
2 years ago
12

The atomic number of Oxygen is 8. Therefore, which of the following answers would correspond to what would be in the nucleus of

an oxygen atom
Chemistry
1 answer:
melomori [17]2 years ago
5 0

Answer:

Its official chemical symbol is O, and its atomic number is 8, which means that an oxygen atom has eight protons in its nucleus. ... Oxygen is normally found as a

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​What is the concentration of the solution prepared by dissolving 2.35 g of KBr (M = 119 g/mol) in 250 mL of water? 
dusya [7]

Answer:

The concentration of KBr is  C = 0.07899 \ mol   L^{-1}

Explanation:

From the question we are told that

      The mass of KBr is  m_{KBr}  = 2.35 \ g

       The molar mass of KBr is  M_{KBr} =  119 g/mol

       Volume of water is V = 250 \ mL = 250 *10^{-3} =  0.250 \ L

This implies that the volume of  the solution is  V = 250 mL

The number of moles of KBr is

         n = \frac{m_{KBr}}{M_{KBr}}

Substituting values

         n =  \frac{2.35}{119}

        n = 0.01975 \ mol

The concentration of KBr is mathematically represented as

                C = \frac{0.01975}{0.250}

                C = 0.07899 \ mol   L^{-1}

3 0
3 years ago
Which material has carbon atoms interspersed with iron atoms in its molecular structure?
gogolik [260]

Answer:

steel should be correct

4 0
2 years ago
In which case would an electron experience the greatest effective nuclear charge? not all cases describe an atom in the ground s
lisabon 2012 [21]

One electron in an atom experiences the entire positive charge of the nucleus. Coulomb's law can be used in this situation to determine the effective nuclear charge.

In contrast, the outside electrons in an atom with many electrons are drawn to the positive nucleus and repelled by the negatively charged electrons at the same time. The force between two stationary, electrically charged particles can be measured using Coulomb's law inverse-square law, also known as Coulomb's law. Conventionally, the electric force between two charged objects at rest is referred to as the Coulomb force or electrostatic force.

The electron is a subatomic particle with the symbol e or with an electric charge of one elementarily negative charge. The lepton particle family's first generation includes electrons.

Learn more about Coulomb's law here

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Which statement is true about this reaction?
lubasha [3.4K]

Answer:

A) It is a practical source of energy on Earth.

Explanation:

The reaction shown is a nuclear fusion reaction. Nuclear fusion refers to the combination of two light nuclei to produce a heavier nuclei with a release of tremendous amount of energy. The energy released in a fusion reaction is so great and it is often difficult to achieve fusion reactions in a controlled nuclear reactor.

Fusion reactions just like the one shown is the source of energy on earth. The energy reaching the earth is obtained by fusion reactions in outer space.

7 0
3 years ago
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The units on the ruler are in nanometers (nm). look at the graduations on the ruler. what does each graduation represent?
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The units on the ruler are inches, centimeters, and millimeters. Nanometers (nm) is equivalent to 10^-9 m. Each graduation on the ruler represents 0.1 millimeters or 0.01 centimeters. The other side also has a graduation of 0.1 inch. The function of the ruler depends on how you use it. 
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