Question

Determine the amount (in grams) of each reagent required to make one liter of earthworm saline. The final concentration of each reagent are given in mM.

Reagent Final Concentration

NaCl 102.7 mM

KCL 1.61 mM

CaCl2 1.36 mM

NaHCO3 1.19 mM

Answer 1

Answer

Each reagent required to make one litre of earthworm saline

final concentration of NaCl =102.7 mM; 102.7 mM=102.7 g

to make 102.7 g of NaCl in 1 litre saline

? /1= 102.7 g

?=102.7 g,so to make 102.7 g of NACl in 1 litre saline ,102.7 g of NACl should be added

final concentration of KCL =1.61 mM; 1.61 mM= 1.61 g

? /1= 1.61 g

?=1.61 g,so to make 1.61 g of KCL in 1 litre saline ,1.61 g of KCLshould be added

final concentration of CaCl2 =1.36 mM ;1.36 mM= 1.36 g

? /1= 1.36 g

?=1.36 g,so to make 1.36 g of CaCl2 in 1 litre saline ,1.36 g of CaCl2 should be added

final concentration of NaHCO3= 1.19 mM; 1.19 mM=  1.19 g

? /1= 1.19 g

?=1.19 g,so to make 1.19 g of NaHCO3 in 1 litre saline ,1.19 g of NaHCO3 should be added

so the answer is:

the amount of NaCl 102.7 g

the amount of KCL 1.61 g

the amount of CaCl2 1.36 g

the amount of NaHCO3 1.19 g