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marusya05 [52]
3 years ago
10

Image please. 30 POINTS

Chemistry
1 answer:
Galina-37 [17]3 years ago
3 0
Q14: Our sun
Q15: The strong magnetic reaction in our atmosphere
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What happens when a catalyst is used in a chemical reaction
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How many protons, neutrons, and electrons does the atom above have?
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So, I'm not entirely sure about the choices you provided :)

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Beta particle has the charge and mass of an electron. Upon the release of a beta particle, the mass number of Sr remains unchanged but the atomic number of Sr increases by 1. As a result both Sr and Yt have mass number 90, however, Sr and Yt have atomic numbers 38 and 39 respectively.

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