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UNO [17]
4 years ago
13

An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.

Chemistry
1 answer:
adell [148]4 years ago
8 0

The mass of an atom comes from the protons and neutrons that are found in the nucleus. The number of protons is the atomic number of an element. To find the number of neutrons, subtract the atomic number from the mass of an atom. So, if an element is 76, the number of protons AND electrons is also 76. 

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Explanation:

From the question given above, the following data were obtained:

Number of mole of Ba₃(PO₄)₂ = 1.33 moles

Mass of Ba₃(PO₄)₂ =?

Next, we shall determine the molar mass of Ba₃(PO₄)₂. This can be obtained as follow:

Molar mass of Ba₃(PO₄)₂ = (137.3×3) + 2[31 + (4×16)]

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Finally, we shall determine the mass of Ba₃(PO₄)₂. This can be obtained as follow:

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Mass of Ba₃(PO₄)₂ =?

Mole = mass /Molar mass

1.33 = Mass of Ba₃(PO₄)₂ / 601.9

Cross multiply

Mass of Ba₃(PO₄)₂ = 1.33 × 601.9

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