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  1. C

    A tough chemistry question here?

    An element X combines with oxygen to form a compound of formula XO2. If 24.0 grams of element X combines with exactly 16.0 grams of O to form this compound, what is the atomic weight of element X? Thank you.
  2. C

    Do police fingerprint for bike theft?

    My bike was stolen, and the cable lock was cut several times and left there. I was wondering if the police would take the fingerprint on the lock or not.
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