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Topic: desperately need help due by 11:59 pm tonight  (Read 3310 times)

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Offline dlv6gc

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desperately need help due by 11:59 pm tonight
« on: September 24, 2010, 12:16:53 PM »
#1) How many milliliters of 0.55 M HCl are needed to react with 5.9 g of CaCO3?
       2 HCl(aq) + CaCO3(s) --->  CaCl2(aq) + CO2(g) + H2O(l)
#2How many grams of solid barium sulfate form when 14.2 mL of 0.160 M barium chloride reacts with 64.4 mL of 0.055 M sodium sulfate? Aqueous sodium chloride is the other product.
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Offline MrTeo

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Re: desperately need help due by 11:59 pm tonight
« Reply #1 on: September 24, 2010, 12:59:17 PM »
Show us your attemps first...
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The way of the superior man may be compared to what takes place in traveling, when to go to a distance we must first traverse the space that is near, and in ascending a height, when we must begin from the lower ground. (Confucius)

Offline JGK

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Re: desperately need help due by 11:59 pm tonight
« Reply #2 on: September 24, 2010, 03:12:37 PM »
Rules Is Rules  :D

Just because you left it till the last minute doesn't get you a free pass
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Experience is something you don't get until just after you need it.

Offline dlv6gc

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Re: desperately need help due by 11:59 pm tonight
« Reply #3 on: September 24, 2010, 10:25:06 PM »
i no longer need help with problem 1 but i still need help with 2 i dont know where to start so i have no attempts to show... except Na2SO4 + BaCL ----> BaSO4 + 2NaCl 

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Offline dlv6gc

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Re: desperately need help due by 11:59 pm tonight
« Reply #4 on: September 24, 2010, 10:27:18 PM »
what do you mean left it to the last minute i have been working on my chem hwk since wednesday and i just found out about this site today and thats when i tried to get help
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Offline MrTeo

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Re: desperately need help due by 11:59 pm tonight
« Reply #5 on: September 25, 2010, 02:41:58 AM »
Quote from: dlv6gc on September 24, 2010, 10:25:06 PM
i no longer need help with problem 1 but i still need help with 2 i dont know where to start so i have no attempts to show... except Na2SO4 + BaCL ----> BaSO4 + 2NaCl 

C'mon... Lavoisier's law and limiting reagent, it's simple stoichiometry.

http://en.wikipedia.org/wiki/Limiting_reagent
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The way of the superior man may be compared to what takes place in traveling, when to go to a distance we must first traverse the space that is near, and in ascending a height, when we must begin from the lower ground. (Confucius)
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