ANSWERS: 1
  • well, you need to determine the ratio of Calcium to Bromine. You know that there are 16 grams of bromine in, right? And Bromine is twice as heavy as calcium (per atom) That would mean that there are only twice as many Bromine atoms as calcium atoms (instead of 4 times as the ratio 16 /4 ratio would suggest) So you have 2 x Br + 1 x Ca. Two simple possibilities would be Br2Ca or Br4Ca2 You'd have to work out the bonds to see which, if either of those, is correct.

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