Washing soda is a form of a hydrated sodium carbonate (Na2CO3 ∙ 10H2O). If a 10g sample was heated until all the water was driven off and only 3.65 g of anhydrous sodium carbonate (106 g/mol) remained, what is the percent yield of the anhydrous sodium carbonate? Na2CO3 ∙ 10H2O → Na2CO3 + 10H2O

a
36%
b
94%
c
98.6%
d
63.5%
please help

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16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

‘which reaction would most likely require the use of an inert electrode?