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Dima020 [189]
3 years ago
15

Which of the following statements is true? Atoms of isotopes of an element have different numbers of electrons. Atoms of isotope

s of an element have different numbers of neutrons. Atoms of the same element all have the same mass. Atoms of isotopes of an element have different numbers of protons.​
Chemistry
2 answers:
ivolga24 [154]3 years ago
8 0

Answer:

B

Explanation:

serious [3.7K]3 years ago
3 0

Answer:

atoms of isotopes of an element have different numbers of neutrons.

Explanation:

isotopes have the same number of protons, but different numbers of neutrons.

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Answer:

262.5 Joules

Explanation:

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Wittaler [7]

Answer:

 A.    2Na       +    2H₂O   →    2NaOH   +  H₂  

Explanation:

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Reactants:

        Sodium +  water

Product:

        Sodium hydroxide + hydrogen gas

So;

         2Na       +    2H₂O   →    2NaOH   +  H₂  

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