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  1. K

    calcium carbonate q

    damn, yep u right im pretty sure, i probably, stupily messed up the simple formula, hope they're not too harsh in the marking
  2. K

    calcium carbonate q

    im pretty sure you had to take the excess number moles of hcl away from the original which was 0.015-something like 0.0014, so 0.0136 moles of hcl reacted with the CaCO3, then mass = 0.0136x100.09 or something like that, so about 1.36 grams i got. but everyone getting o.6 has got me worried...
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