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Topic: I have a mental block!  (Read 4070 times)

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myalpineshines

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I have a mental block!
« on: August 28, 2005, 11:00:04 PM »
Okay i start school tomorrow and i am burning the midnight oil trying to get this stupid summer packet done for AP chem...HELP
    I have 2 problems i just cant figure out and they are:

1:  Solid sodium carbonate is heated (he is asking for a simple reaction prediction).

2:  when sodium carbonate reacts with hydrochloric acid, the carbonic acid that is formed immediately breaks down into carbon dioxide and water.  What mass of sodium carbonate would have been originally present if 5.0 L of carbon dioxide was produced?  (hint: Molar volume of a gass is 22.414 L/mol)
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kissoftalons

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Re:I have a mental block!
« Reply #1 on: August 28, 2005, 11:55:18 PM »
No. 1  - adding heat would result in a decompositiong reaction...so just break it down.
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Offline Donaldson Tan

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Re:I have a mental block!
« Reply #2 on: August 29, 2005, 02:00:40 AM »
2. Na2CO3 + 2HCl -> 2NaCl + CO2 + H2O
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"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006
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