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denpristay [2]
3 years ago
13

Its atom contains 50 electrons and 70 neutrons

Chemistry
1 answer:
Tcecarenko [31]3 years ago
4 0
Tin-120 because an atom has to have a neutral charge. If an atom has 50 electrons it must have 50 protons unless it's an ion. Add 70 to the atomic mass because it has 70 neutrons on top of 50 protons. That equals to 120. Tin has an atomic number of 50 (meaning it has 50 protons) and it has roughly an atomic mass of about 118. If the given has 70 neutrons then it's a isotope of tin.
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1.

The ionic equation is:

H⁺(aq) + NO₃⁻(aq) + Na⁺(aq) + OH⁻(aq) → Na⁺(aq) + NO₃⁻(aq) + H₂O(l)

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The required dissociations are

HNO₃(aq) → H⁺(aq) + NO₃⁻(aq)

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So, the ionic equation is

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2.

The ionic equation is

H⁺(aq) + Cl⁻(aq) + K⁺(aq) + OH⁻(aq) → K⁺(aq) + Cl⁻(aq) + H₂O(l)

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The required dissociations are

HCl(aq) → H⁺(aq) + Cl⁻(aq)

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3.

The ionic equation is

2H⁺(aq) + SO₄²⁻(aq) + Mg²⁺(aq) + 2OH⁻(aq) → Mg²⁺(aq) + SO₄²⁻(aq)

+ 2H₂O(l)

H₂SO₄(aq) + Mg(OH)₂(aq) → MgSO₄(aq) + 2H2O(l)

The required dissociations are

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So, the ionic equation is

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+ 2H₂O(l)

Learn more about ionic equations here:

brainly.com/question/11628165

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