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I am Lyosha [343]
2 years ago
5

Please help chemistry timed test

Chemistry
2 answers:
Artist 52 [7]2 years ago
8 0

Answer:

Barrium nucleus has 56 protons and 137−56=81 neutrons.

Atomic Mass 137.327 atomic mass units

Number of Protons 56

Number of Neutrons 81

Number of Electrons 56

lakkis [162]2 years ago
7 0

Answer:

54

Barium atomic number is 56, this means that it has 56 protons in its nucleus and put it as a period 6 element. an uncharged barium atom would have 56 electron also. However as a group 2 element barium easily loses 2 electron to form the +2 cation. the ions has 56-2=54

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Raw materials used in the manufacturing of indigenous soap
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Answer:

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Explanation:

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svetlana [45]
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NeTakaya

Answer:

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Explanation:

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In this case, in order to substantiate whether the cabin meet the federal standards, we need to convert the 500 mmHg to atm and compare the result with 0.72 atm by knowing that 1 atm equals 760 mmHg:

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8 0
3 years ago
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:(

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