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Prepare 250ml of 0.2M phosphate

How would you prepare 250ml of 0.2M sodium phosphate buffer of PH 6.4 if the following chemicals are available :dibasic sodium
1. 2 answers
2. asked by Quinn
3. 2,355 views
Prepare 250ml of 0.2M phosphate buffer of pH 6.4.starting from Na2HPO4,NaH2PO4,0.129N NaOH solution.
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2. asked by Rita
3. 1,006 views
I have 0.500ml of 3M ethanol and then I take 0.250ml of it and put it to 0.250ml of 0.06M phosphate buffer, what is the final
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2. asked by trouble
3. 452 views
You are asked to prepare 2 L of 50 mM sodium phosphate pH 7.0. ThepK2 of phosphate is 6.8. What are the amounts of sodium
1. 1 answer
2. asked by Alberto
3. 587 views
You weigh out 196.07mg ferrous ammounium sulfate (FW 392.14) to prepare 250mL of solution which is 0.002M with respect to that
1. 2 answers
2. asked by Ken
3. 681 views
Can someone please check my work?Calculate the mass of (NH4)2S2O8 needed to prepare 250mL of a 0.100M solution. I got 5.705 g.
1. 1 answer
2. asked by Rachel
3. 2,317 views
Prepare 250mL of 0.02 M Phosphate buffer in which [H2PO4]- = [HPO4]-Calculate the volumes of 2 M phosphoric acid and 1 M NaOH
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2. asked by Sam
3. 485 views
how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic
1. 2 answers
2. asked by lala
3. 1,146 views
what mass of Ca is needed to completely react with 5.0M of .250ml Copper I Phosphate?
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2. asked by stella
3. 381 views
how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic
1. 2 answers
2. asked by Merlina
3. 1,965 views