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3 years ago

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Chemistry

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anastassius [24]3 years ago

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Cool kaisjwokqksosoqobsjdiwkq

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Many hospitals, and some doctors\' offices, use radioisotopes for diagnosis and treatment, or in palliative care (relief of symp

jekas [21]

Answer:

For a: The isotopic symbol of the above atom will be $_{53}^{131}\textrm{I}$

For b: The isotopic symbol of the above atom will be $_{77}^{192}\textrm{Ir}$

For c: the isotopic symbol of the above atom will be $_{62}^{153}\textrm{Sm}$

Explanation:

The isotopic representation of an atom is: $_Z^A\textrm{X}$

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

For a: Iodine-131

Atomic number of iodine = 53

Mass number of iodine = 131

Symbol of iodine = I

The isotopic symbol of the above atom will be $_{53}^{131}\textrm{I}$

For b: Iridium-192

Atomic number of iridium = 77

Mass number of iridium = 192

Symbol of iridium = Ir

The isotopic symbol of the above atom will be $_{77}^{192}\textrm{Ir}$

For c: Samarium-153

Atomic number of samarium = 62

Mass number of samarium = 153

Symbol of samarium = Sm

The isotopic symbol of the above atom will be $_{62}^{153}\textrm{Sm}$

7 0

3 years ago

(b) in the direct hydration method, ethene reacts with steam. The equation for this reaction is C2H4 + H2O = C2H5OH

ladessa [460]

Answer:

20 degree and 4000000N

3 0

3 years ago

What would the name of a compound composed of nickel, sulfur, and oxygen be? A. Nickel sulfur oxide B. Nickel sulfate C. Nickel

dexar [7]

Answer:

The answer to your question is: B. Nickel Sulfate

Explanation:

A. Nickel sulfur oxide this compound do not exist, this option is incorrect.

B. Nickel sulfate This compund exist and the formula is NiSO₄

C. Nickel oxygen sulfide This compound do not exist, the order of the names is inocrrect.

D. None of these This option is incorrect because because letter B is correct.

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4 years ago

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Which statement is true regarding the diagram of circle P? The sum of y and z must be 2x. The sum of y and z must be x. The diff

olga2289 [7]

Answer:

The difference of Z and Y must be 2x

Explanation:

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3 years ago

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A student wants to lift a 50 N backpack off of the floor. Tell me what will happen to the backpack depending on the amount of fo

kirza4 [7]

Answer:

srry agian

Explanation:

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4 years ago