10 ml aliquots of natural water were pipetted into 50 ml

Assignment Help Chemistry

Reference no: EM13642483

10 mL aliquots of natural water were pipetted into 50 mL flasks. Exactly 0.0, 0.5. 10.0, 15.0, and 20.0 mL of a standard solution containing 11.1 ppm of Fe were added to each, followed by an excess of thiocyanate ion to give the red complex Fe(SCN). After dilution to volume, the instrumental signal S for each of the five solutions, measured with colorimeter, was found to be: 0.240, 0.437, 0.621, 0.809, and 1.009, respectively. What was the concentration of Fe in the water sample?

Reference no: EM13642483

Questions Cloud

Find the probabability a value will be less than 165 : find the probabability a value will be less than 1.65 standard deviations above the

Compute the standard deviation of the systolic blood : blood pressure is a measure of the blood force against the walls of the arteries. the larger value represents the

A nearsighted person cannot see objects clearly beyond 25 : a nearsighted person cannot see objects clearly beyond 25 cm her far point. if she has no astigmatism and contact

A boat has a mass of 6800 kg its engines generate a drive : a boat has a mass of 6800 kg. its engines generate a drive force of 4400 n due west while the wind exerts a force of

10 ml aliquots of natural water were pipetted into 50 ml : 10 ml aliquots of natural water were pipetted into 50 ml flasks. exactly 0.0 0.5. 10.0 15.0 and 20.0 ml of a standard

If the pooled sample is positive then individually test : a way to make screening tests more economical is to pool samples. suppose that we would like to screen for a rare blood

An airplane has a mass of 33500 kg and takes off under the : an airplane has a mass of 33500 kg and takes off under the influence of a constant net force of 37500 n. what is the

Given that the heat of fusion of water is -602 kjmol that : given that the heat of fusion of water is -6.02 kjmol that the heat capacity of h2o is 75.2 jmolk and that the heat

The following reaction comes to equilibrium at 800 k at : the following reaction comes to equilibrium at 800 k. at equilibrium the partial pressure of co is 10.0 atm and the

User Account

All Pages