the concentration of FAS is 50.00mg/L and it is diluted to the 50.00mL mark on a...
the concentration of FAS is 50.00mg/L and it is diluted to the 50.00mL mark on a volumetric flask what is the concentration of Fe(+2) in standard solution in mg/L? and what is the concentration for solutions with 2mL, 5mL, and 10mL (all using a 50.00mL flask)?
-The original concentration for 50 mg/L is 50.00mL as indicated in bold above
Homework Answers
1. 2 ml
mass of FAS in this sample = concentration * volume of sample = 50 mg/L * 2 / 1000 = 0.1 mg
After diluting to 50 ml, concentration = mass of FAS / Volume of FAS = 0.1 mg / (50 * 10-3 L) = 2 mg/L
2. 5 ml
mass of FAS in this sample = concentration * volume of sample = 50 mg/L * 5 / 1000 = 0.25 mg
After diluting to 50 ml, concentration = mass of FAS / Volume of FAS = 0.25 mg / (50 * 10-3 L) = 5 mg/L
3. 10 ml
mass of FAS in this sample = concentration * volume of sample = 50 mg/L * 10 / 1000 = 0.5 mg
After diluting to 50 ml, concentration = mass of FAS / Volume of FAS = 0.5 mg / (50 * 10-3 L) = 10 mg/L
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