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lorasvet [3.4K]
2 years ago
9

An ion has 56 protons, 54 electrons, and 81 neutrons. What is its atomic number ?

Chemistry
2 answers:
-BARSIC- [3]2 years ago
8 0

The Atomic Number indicates the number of protons = 56

EastWind [94]2 years ago
5 0

Answer: The barium – 137 atom would have 56 protons, 56 electrons and 81 neutrons. The barium – 137 cation would have 56 protons, 54 electrons and 81 neutrons.

Explanation: Hope this is helpful

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The brain is part of the central nervous system.

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Which one of the following groups of chemical compounds is composed entirely of organic compounds?
guajiro [1.7K]

Answer:

D

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7 0
3 years ago
When a neutral atom becomes a negatively charged ion, or anion, the atom __________ electrons. a gains b loses c has no change i
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3 0
3 years ago
0.32 g of a walnut is burned under an aluminum can filled with 58.1 mL of water. The water temperature in the can increases by 3
balu736 [363]

Answer:

1.8 × 10² cal

Explanation:

When 0.32 g of a walnut is burned, the heat released is absorbed by water and used to raise its temperature. We can calculate this heat (Q) using the following expression.

Q = c × m × ΔT

where,

c: specific heat capacity of water

m: mass of water

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Considering the density of water is 1 g/mL, 58.1 mL = 58.1 g.

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3 0
3 years ago
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