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anonymous
 one year ago
a 10.00 gram sample of a soluble barium salt is treated with an excess of sodium sulfate to precipitate 11.21 grams BaSO4, (M= 233.4). which barium salt is it?
anonymous
 one year ago
a 10.00 gram sample of a soluble barium salt is treated with an excess of sodium sulfate to precipitate 11.21 grams BaSO4, (M= 233.4). which barium salt is it?

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taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1So let's start with the chemical equation (let's let X represent the unknown element) BaX+Na2SO4 > BaSO4+NaX

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Next step is to determine the number of moles to do this we have the mass of our products of 11.21g we also know the molar mass of 233.4 n=mass/molar mass

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1n=11.21/233.4=? @dahlinal

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1@dahlinal im more than happy to help but I can't just give you the answer I'm happy to walk you to it, but you're going to have to do some work here too

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Yes so now we have to reverse it we have the moles and we have the weight and we will use it to determine the molar mass of the BaX

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Molar mass= 10/0.048

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Perfect so we know that the molar mass of the BaX=208.33 So if we subtract the molar mass of the barium we can find the molar mass of our unknown 208.33Ba=x

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Molar mass of barium is 137.33g/mol

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Perfect so that is the molar mass but we have to look back at the chemical formula BaX+Na2SO4 > BaSO4+Na2X

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Ba has an oxidation number of 2+ so our unknown is actually X2 so we have to divide our mollar mass we found and divide that by 2

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Yep and there is an element that has that molar mass

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Also the actual chemical formula is BaX2+Na2SO4 > BaSO4+2NaX

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1And yes it is chlorine as your unknown

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1No problem! Happy to help!
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