Chemistry is Satan's Manuscript. I need help please

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Nadzu
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Okay so the question is
Bromine consists of two stable isotopes that exist in approximately 1:1 ratio. The relative atomic mass of bromine is 79.90. Which are the stable isotopes of bromie.
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username402722
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What relationship has Chemistry to the writings of Boris Johnson or the work of Simon Cowell? I fail to see the connection.

As for bromide, I cannot help answer that question.
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charco
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(Original post by Nadzu)
Okay so the question is
Bromine consists of two stable isotopes that exist in approximately 1:1 ratio. The relative atomic mass of bromine is 79.90. Which are the stable isotopes of bromie.
An isotope is an atom of an elements with a specific mass number.
The relative mass of an element is the weighted average mass of the isotopes.
You are told that the ratio of isotopes is about 1:1 so which two integer numbers give you an average of about 79.90
(there are actually many answers to that question, so you will have to assume that the answer is the numbers that are closer to one another!)
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username5064508
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79.90 = (A x 0.5) + (B x 0.5) where A and B are the stable isotope numbers. The numbers are probably going to be close to 79, so try some numbers and see whether you can find the correct combination.
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RazzzBerries
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"Satan's Manuscript" :laugh:

This is why I took English, History and Politics for my A-Levels lol. You guys are super brainy!
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