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how to prepare and calculate

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.
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2. asked by Rachel
3. 2,312 views
PLEASE, PLEASE, can you give me the step to calculate these:1.Prepare the beginning inventory for the first quarter 2.Prepare
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2. asked by Jessi
3. 899 views
calculate the mass of the species required to prepare a phosphoric acid buffer with a voncentration of 0.34M ,volume of 500ML
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2. asked by zaforyi
3. 596 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
Calculate the volume of concentrated reagent required to prepare the diluted solutions indicated: (a) 18 M H2SO4 to prepare 225
1. 4 answers
2. asked by Annette
3. 3,211 views
Calculate the volume of concentrated reagent required to prepare the diluted solution17 M H3PO4 to prepare 939 mL of 6.7 M H3PO4
1. 3 answers
2. asked by X
3. 1,727 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. 1,963 views
you need to prepare 30g of calcium cholride. you have 2m hydrochloric acid and a new container off pure calcium carbonate.
1. 1 answer
2. asked by marissa
3. 497 views
Prepare 0.1 NaOH in 50ml standard flask.1. Determine the concentration and amount of solution required for the experiment? 2.
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2. asked by Keak Kuet Pal
3. 31 views
To prepare the titrant fo amonia nitrogen analysis an analyst weight out 1.20 grams of concentration 98% sulfuric acid and
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2. asked by Faye
3. 537 views