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Calculate the amount of Na2HPO4*7H2O

Calculate the amount of Na2HPO4*7H2O in grams needed to make 50 mL of a 0.40 M solution. I think this is dealing with molarity
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2. asked by Bruce
3. 1,116 views
how do u calculate the percentage of water of cystallisation in FeSO4.7H2Opercent water= 7*molmassH20/molmassFeSO4.7H2O * 100
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2. asked by janet
3. 1,372 views
Calculate the amount of Na2HPO4 and NaH2PO4 needed to make a 100 mL of 0.1 M sodium phosphate buffer solution that has pH 6.5
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2. asked by Anonymous
3. 208 views
Calculate the amount of NaH2PO4 and Na2HPO4 needed to prepare 100 mL of a buffer with a pH = 8.25 so that the sum of
1. 1 answer
2. asked by Anonymous
3. 908 views
How many moles of conjugate base (Na2HPO4) are present in 40mL of .010M buffer at pH 7.5 vs at pH 6?Buffer was made up of
1. 4 answers
2. asked by Heidi
3. 837 views
How do I calculate the amount of grams of Na2HPO4 and NaH2PO4 to prepare 200 mL of a buffer with an 8.25 pH so the sum of the
1. 2 answers
2. asked by Carrie
3. 1,277 views
How do I calculate the amount of grams of Na2HPO4 and NaH2PO4 to prepare 200 mL of a buffer with an 8.25 pH so the sum of the
1. 2 answers
2. asked by Carrie
3. 868 views
8.1g of XSO4.7H2O crystal when heated at 90degree for 15 minutes gave 6.9g of the salt,which gave 4.9g when heated further at
1. 6 answers
2. asked by Banko
3. 1,232 views
what is the van't Hoff factor for MgSo4.7H2O and ZnSo4.7H2O?
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2. asked by elli
3. 2,486 views
Activity Coefficient for Phosphate Buffers: How would I calculate the predicted pH for Na2HPO4 and NaH2PO4? For hypothetical pH
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2. asked by H
3. 771 views