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An impure sample of Na2SO4

An impure sample of Na2SO4 weighed 1.562g. A BaSO4 precipitate from this sample weighed 2.496g. Calculate the percentage of
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2. asked by peter
3. 1,010 views
A sodium hydroxide sample is contaminated with sodium chloride. A 0.240 gram sample of this impure sample is dissolved in water
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2. asked by Sam
3. 1,191 views
NaOH(s)+ H2SO4(aq)=Na2SO4(aq) + H2O(l)Consider the unbalanced equation above.A 0.900 g sample of impure NaOH was dissolved in
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2. asked by Tiffany
3. 1,624 views
Impure sample of table salt that weighed 0.8421g, when dissolved in water and treated with excess AgNO3, formed 2.044g of AgCl.
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2. asked by London
3. 2,013 views
A thoroughly dried 1.281g sample of Na2SO4 is exposed to the atmosphere and found to gain 0.383g in mass.What is the percent, by
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2. asked by Lisa
3. 1,343 views
CrCl3(s) + AgNO3 (aq)= AgCl(s) + Cr(NO3)3(aq)A 0.750 g sample of impure CrCl3 was removed from a bottle that contained 1.75 g of
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2. asked by jade
3. 2,017 views
A sample of impure magnesium was analyzed by allowing it to react with excess HCl solution:Mg(s) + 2 HCl(aq) → MgCl2(aq) +
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2. asked by James
3. 4,495 views
5. A 0.500 g sample of a BaCl2•2H2O/Na2SO4 salt mixture, when mixed with water, filtered, and dried, produced 0.225 g of
1. 2 answers
2. asked by sarah
3. 1,040 views
A 50.0 mL sample of 1.50×10−2 M Na2SO4(aq) is added to 50.0 mL of 1.23×10−2 M Ca(NO3)2(aq).What percentage of the Ca2+
1. 4 answers
2. asked by K
3. 806 views
A sample of impure magnesium was allowed to react with excess HCL solution. After 5.5 gram of the impure metal was treated with
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2. asked by Anonymous
3. 631 views