Chemistry Help Please! (Percent Yield&Concentration)

[emilymayzes]

Please show and explain the work to figure out these questions

 

1. you react 3.50 g of solid sodium metal with water to produce hurdogen gas and sodium hydroxide. if at the end of the reaction there is 6.8 l of solution, what is the concentration of sodium hydroxide?

Answer: 0.022 M NaOH

 

2. an excess of aqueous calcium chloride is reacted with 350 ml of .650 M aqueous sodium carbonate. if 10g of a solid is produced, what is the percent yield

Answer: 43.8%

[hypervalent_iodine]

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Moderator Note

Hi emilymayzes,

 

Please be aware that we don't simply give out answers to what appear to be homework questions. Could you please show your own attempts and explain where it is that you are struggling?