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Homework Help: Study guide for AP Chem midterm! HELP PLEASE!

  1. Jan 14, 2010 #1
    These were the only questions out of the 110 question study guide that I didn't understand, I have no clue how to do them since it's been a while since I've done stuff from early chapters. I would love it if anyone can help me and give me a step-by-step! Thank you in advance!

    Fe2O3 + 3CO --> 2Fe + 3CO2: 150g Fe2O3 is limiting reagent what is theoretical yield?

    ___ moles magnesium oxide produced by 3.82g of magnesium nitride with 7.73g water Mg3N2 + 3H2O --> 2NH3 + 3MgO

    Cu + 2AgNO3 --> 2Ag + Cu(NO3)2: 6.35g Cu reacts with 33.98g of AgNO3 produce 18.75g of Cu(NO3)2 mass of Ag produced?

    What is the balanced net ionic equation of precipitation of CaCO3 when Na2CO3 and CaCl2 are mixed

    What is the molarity of NaOH if 48mL is needed to neutralize 35mL of 0.144 M H2SO4

    the temperature of a 15g sample of lead goes from 22oC to 36oC upon adding 29j of heat what is its specific heat?

    The molarity of 52.2g sucrose in 35Ml solution

    There are ___ mol of Bromide ions in a 0.500 L of 0.300 M solution of AlBr3

    Find concentration of Pb2+ in a solution when 100ml of 0.10M PbCl2 is mixed with 100Ml of 0.050M H2SO4

    How many grams of NaOH are there in 500mL of a 0.17 M NaOH solution?

    Empirical formula of 49.44% K, 30.3% O, 20.3% S

    Molecular Formula of 40% C, 53.29% O, 6.7% H and 60.06 amu
  2. jcsd
  3. Jan 16, 2010 #2
    Welcome to PF!

    You need to attempt the problems (and show the work), before we can help you.
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