Zeze J.

asked • 01/30/16

please help

sodium chloride is used for melting ice in the winter months. this compound contains 1.54 for every 1.00 g 0f sodium. which of the following mixture would react to produce sodium chloride with no sodium or chlorine remaining

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Mary M. answered • 01/30/16

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can you please clarify the question?  1.54 grams? moles? also, when you state "which of the following" what are the choices that have been given to you?
 
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Zeze J.

1.54 grams
choices are 
7.11 g of sodium and 11.8g of chlorine 
4.11g of sodium and 5.55g of chlorine 
11.9g of sodium and 19.3g of chlorine 
13.9 g of sodium and 21.4g of chlorine 
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01/30/16

Mary M.

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the equation is 2Na + Cl2 --> 2NaCl
the mole ratio of sodium to chlorine is 1:1  therefore, the ratio stays the same with the atomic masses.  so you can 
1.54g Cl : 1 g Na :: 11.8g Cl : x       x = 7.66 g Na not the correct choice
1.54g Cl : 1 g Na :: 5.55g Cl : x       x = 3.60 g Na not the correct choice
1.54 g Cl : 1 g Na :: 19.3 g Cl : x      x = 12.53 g Na not the correct choice
1.54 g Cl : 1 g Na :: 21.4 g Cl : x      x = 13.89 g Na This is the correct  choice because the ratio matches the choice
 
hope this helps
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01/30/16

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