Calculate the amount of reagent and water required to make the following solutions. Do not assume...

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Biology

Calculate the amount of reagent and water required tomake the following solutions. Do not assume you have a stocksolution unless instructed to do so.
a) 1.00 L of 20.00mM Tris-HCl, 50.0mM NaCl, 20.00mMMgSO₄ x 7H₂O, 5.00mM CaCl₂
b) 275 mL of 25% Na₂HCO₃, 18.0% EtOH
c) 750.0mL of 0.2M sodium citrate, 10.00mM SDS (from 0.50Mstock), 2.5% glycerol
d) Calculate molarity of 15% NaCl and 27% hydrochloric acid

Answer & Explanation Solved by verified expert

4.5 Ratings (620 Votes)

In first question Molecular weight of Tris HCl 12114 gmol According to molarity formula M wt in grams Mol wt Volu Liters 20 103 wt in gra 12114 1 20 12114 1 103 24228 103 242 gm is required For NaCl molecular wt is 5844 gmol 50103 wt in gm 5844 1 50 5844 1 103 2922 103 292 gm Magnesium sulphate seven hydrate molecular wt 24647 gmmol 20 103 wt in gram 24647 1 20 24647 1 103 49294 103 492 gm 5mM Calcium chloride Mol wt See Answer

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