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kirill115 [55]
4 years ago
12

When a radioactive atom emits an alpha particle, the original atom's atomic number decreases by four.

Chemistry
1 answer:
solniwko [45]4 years ago
5 0
Ya it is true, alpha particle is actually helium atom with no electrons !
He2+ and it has mass of 4 u ....So that is correct !
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How much heat is required to convert 12. 0 g of ice at -10. 0 ºc to steam at 100. 0 ºc?
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Main Answer:

Given data:

Mass of ice m = 12 grams = 12/1000 = 0.012 kg

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Heat required Q = m x s x t

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Q = 5.5176 KJ

Explanation:

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3 years ago
What are two reasons that someone would want to become a scientist?<br> 1 point<br> Your answer
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Vika [28.1K]

Answer:

Mass = 5.24 g

Explanation:

Given data:

Number of atoms of Ca = 7.9×10²² atoms

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3 years ago
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