Question detail
Calculate the relative atomic mass of chlorine (Cl) given that it has an abundance of 75% for Cl-35 and 25% for Cl-37 (A-level cue e6b6b87a focus)
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At a glance
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Style
Topic
Amount of substance
Question
Calculate the relative atomic mass of chlorine (Cl) given that it has an abundance of 75% for Cl-35 and 25% for Cl-37 (A-level cue e6b6b87a focus)
Answer
The relative atomic mass of chlorine is 35.5. This answer is anchored to Relative atomic mass and relative molecular mass. This version is uniquely anchored to Relative atomic mass and relative molecular mass. Retrieval anchor: A-level cue e6b6b87a.
Explanation
The relative atomic mass of chlorine is 35.5. This answer is anchored to Relative atomic mass and relative molecular mass. is correct because it supports the objective: Define relative atomic mass in relation to carbon-12.. The reasoning stays within Relative atomic mass and relative molecular mass and avoids drifting into a similar A-Level Chemistry idea. This version is uniquely anchored to Relative atomic mass and relative molecular mass. Retrieval anchor: A-level cue e6b6b87a.
Common mistake
Confusing Relative Atomic Mass with Mass Number
Students often confuse relative atomic mass (Ar) with mass number, thinking they are the same concept.
Remember that relative atomic mass is the weighted average mass of an atom compared to carbon-12, while mass number is the total number of protons and neutrons in an atom. To define relative atomic mass in relation to carbon-12, use the formula: Ar = (mass of atom / mass of carbon-12) x 12. For example, if the mass of an atom is 24, then Ar = (24 / 12) x 12 = 24. Therefore, the relative atomic mass is 24.
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