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2 years ago

The atomic number of manganese is 25; its mass number is 55.

Chemistry

1 answer:

Anuta_ua [19.1K]2 years ago

4 0

Answer:

c) 30

Explanation:

In an atom , the relation between the subatomic particles of the atom are given as follows -

For a neutral atom ,

Atomic number = number of protons = number of electrons ,

Mass number = number of protons + number of neutrons,

Hence , from the given information of the question,

Atomic number of Manganese = 25 ,

mass number of Manganese = 55 ,

Now, to calculate the number of neutrons , the above relation can be used -

Mass number = number of protons + number of neutrons,

Rearranging ,

number of neutrons = Mass number - number of protons

substituting the respective values ,

number of neutrons = 55 - 25 = 30 .

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Answer:

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2 years ago

Answer the following question: In a space shuttle, the CO2 that the crew exhales is removed from the air by a reaction within ca

aivan3 [116]

Answer:

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$\rm 2LiOH + CO$_{2} \longrightarrow \,$ Li$_{2}$CO$_{3}$ + H$_{2}$O$

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You want to convert moles of carbon dioxide to moles of water.

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$\text{Moles of CO$_{2}$} = \text{650 L CO$_{2}$} \times \dfrac{\text{1 mol CO$_{2}$}}{\text{22.71 L CO$_{2}$ }} = \text{28.6 mol CO$_{2}$}\\\\\text{Moles of H$_{2}$O} = \text{28.6 mol CO$_{2}$} \times \dfrac{\text{1 mol H$_{2}$O}}{\text{1 mol CO$_{2}$}} = \text{28.6 mol H$_{2}$O}\\\\\text{Mass of H$_{2}$O} = \text{28.6 mol H$_{2}$O} \times \dfrac{\text{18.02 g H$_{2}$O}}{\text{1 mol H$_{2}$O}} = \boxed{\textbf{520 g H$_{2}$O}}$

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3 years ago

What type of reaction breaks the bonds that join the phosphate groups in an ATP molecule? What type of reaction breaks the bonds

Paraphin [41]

Answer:

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