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Given the found Concentration (M) of HH2PO4 in a sample of water
being 5.39x10^-5 M,what is...
Given the Concentration (M) being 5.39x10^-5 M, what is the concentration in mg/mL? 0.25 = 2187x...
Given the Concentration (M) being 5.39x10^-5 M, what is the
concentration in mg/mL?
0.25 = 2187x + 0.1322 (0.25 – 0.1322) = 2187x .1178 = = X 2187 x = 5.386374028x10-5 ~5.39x10-5M
The actual concentration was found to be 0.002364 M. 4. Knowing that 1 mole of dissolved...
The actual concentration was found to be 0.002364 M.
4. Knowing that 1 mole of dissolved oxygen ends up reacting with 4 moles of the titrant S2032, how do you calculate the amount of dissolved oxygen (in units of mg/L) from the volume of titrant added? Show your work. (2.5 pts) • Use X (mL) as your total volume of titrant added. • Use the actual concentration of the -0.0025 M NazS2O3 solution used during the titration (calculated in question...
A 25 mg sample of Ciprofloxacin (Mw 331.35 g/mol, a = 9.083 X 103/M-cm) is dissolved in 1 liter of water and the absorbance of a 10 ml sample is found to be 0.56 at 430 nm. What is the purity of...
A 25 mg sample of Ciprofloxacin (Mw 331.35 g/mol, a = 9.083 X 103/M-cm) is dissolved in 1 liter of water and the absorbance of a 10 ml sample is found to be 0.56 at 430 nm. What is the purity of the ciprofloxacin sample? (5 pts) 9.
A 25 mg sample of Ciprofloxacin (Mw 331.35 g/mol, a = 9.083 X 103/M-cm) is dissolved in 1 liter of water and the absorbance of a 10 ml sample is found to...
A 1435 mL sample of drinking water was found to contain 67.0 mg of lead. Calculate...
A 1435 mL sample of drinking water was found to contain 67.0 mg of lead. Calculate the concentration of lead in milligrams per liter. lead concentration: m g/L Calculate the percent mass per volume, % (m/v), of a dextrose solution containing 8.00 g of dextrose in 2.00 x 10 mL of solution. Note that mass is not technically the same as weight, but the abbreviation % (w/v) is often used interchangeably with % (m/v). percent mass per volume concentration: %...
Answer 2) To measure the concentration of phosphorous in a water sample, Phosphorous was first converted...
Answer
2) To measure the concentration of phosphorous in a water sample, Phosphorous was first converted into a color complex in the presence of ammonium molybdate and SnClo. The absorbance of a series of standard phosphorous solutions was measured by a spectrophotometer and gave the calibration curve y 1.150 x, where y is the absorbance of phosphorous complex at 690 nm while x is the concentration of P in ppm. An unknown natural water sample was collected. 10.00 mL of...
Grade: DETERMINATION OF PHOSPHATE IN WATER 1. Option What is the concentration of phosphate in the...
Grade: DETERMINATION OF PHOSPHATE IN WATER 1. Option What is the concentration of phosphate in the original lake water sample if the unknown lake water sample in the option had been diluted by taking 25.0 mL of lake water and diluting it to the indicated final volume? 21.comgy 2. Option Water treatment plants must reduce phosphate levels to 3.2 micromoles PO 3-/L before the water is considered drinkable. If water from Lake Pontchartrain is determined to have a phosphate concentration...
Incorrect Question 9 0/1 pts A water sample is contaminated by benzene at a concentration of...
Incorrect Question 9 0/1 pts A water sample is contaminated by benzene at a concentration of 40 mg/L. If you have only 20 g of activated carbon, what is the volume of water (in mL) that can be treated to the final concentration of 5 mg/L. The Freundlich isotherm coefficients are K = 5 and n = 2.5 for concentrations in g/L. 205 mL 343 mL 292 mL 505 mL
A 1025 mL1025 mL sample of drinking water was found to contain 33.0 mg33.0 mg of...
A 1025 mL1025 mL sample of drinking water was found to contain 33.0 mg33.0 mg of lead. Calculate the concentration of lead in milligrams per liter.
What is the Molar Solubility (concentration, M) of PbCl2 in pure water. Remember that its Ksp...
What is the Molar Solubility (concentration, M) of PbCl2 in pure water. Remember that its Ksp = 1.17 X 10-5. PbCl2 (aq) = Pb2+ (aq) + 2Cl- (aq) 1.43 X 10-2M 1.21 X 102 M O 7.19 X 10-5M O 1.50 M
The chemical trichloroethylene (TCE) is a colorless liquid found in very low concentration in drinking water....
The chemical trichloroethylene (TCE) is a colorless liquid found in very low concentration in drinking water. The EPA has set a maximum concentration of TCE in drinking water at 5 ppb. Consuming water on a regular basis that contains higher concentrations can lead to cancer. (a) What is the ppb concentration in a 200.0−L (200.0 kg) sample of water that contains 0.15 mg TCE?
Given the Concentration (M) being 5.39x10^-5 M, what is the
concentration in mg/mL?
0.25 = 2187x + 0.1322 (0.25 – 0.1322) = 2187x .1178 = = X 2187 x = 5.386374028x10-5 ~5.39x10-5M
The actual concentration was found to be 0.002364 M.
4. Knowing that 1 mole of dissolved oxygen ends up reacting with 4 moles of the titrant S2032, how do you calculate the amount of dissolved oxygen (in units of mg/L) from the volume of titrant added? Show your work. (2.5 pts) • Use X (mL) as your total volume of titrant added. • Use the actual concentration of the -0.0025 M NazS2O3 solution used during the titration (calculated in question...
A 25 mg sample of Ciprofloxacin (Mw 331.35 g/mol, a = 9.083 X 103/M-cm) is dissolved in 1 liter of water and the absorbance of a 10 ml sample is found to be 0.56 at 430 nm. What is the purity of the ciprofloxacin sample? (5 pts) 9.
A 25 mg sample of Ciprofloxacin (Mw 331.35 g/mol, a = 9.083 X 103/M-cm) is dissolved in 1 liter of water and the absorbance of a 10 ml sample is found to...
A 1435 mL sample of drinking water was found to contain 67.0 mg of lead. Calculate the concentration of lead in milligrams per liter. lead concentration: m g/L Calculate the percent mass per volume, % (m/v), of a dextrose solution containing 8.00 g of dextrose in 2.00 x 10 mL of solution. Note that mass is not technically the same as weight, but the abbreviation % (w/v) is often used interchangeably with % (m/v). percent mass per volume concentration: %...
Answer
2) To measure the concentration of phosphorous in a water sample, Phosphorous was first converted into a color complex in the presence of ammonium molybdate and SnClo. The absorbance of a series of standard phosphorous solutions was measured by a spectrophotometer and gave the calibration curve y 1.150 x, where y is the absorbance of phosphorous complex at 690 nm while x is the concentration of P in ppm. An unknown natural water sample was collected. 10.00 mL of...
Grade: DETERMINATION OF PHOSPHATE IN WATER 1. Option What is the concentration of phosphate in the original lake water sample if the unknown lake water sample in the option had been diluted by taking 25.0 mL of lake water and diluting it to the indicated final volume? 21.comgy 2. Option Water treatment plants must reduce phosphate levels to 3.2 micromoles PO 3-/L before the water is considered drinkable. If water from Lake Pontchartrain is determined to have a phosphate concentration...
Incorrect Question 9 0/1 pts A water sample is contaminated by benzene at a concentration of 40 mg/L. If you have only 20 g of activated carbon, what is the volume of water (in mL) that can be treated to the final concentration of 5 mg/L. The Freundlich isotherm coefficients are K = 5 and n = 2.5 for concentrations in g/L. 205 mL 343 mL 292 mL 505 mL
What is the Molar Solubility (concentration, M) of PbCl2 in pure water. Remember that its Ksp = 1.17 X 10-5. PbCl2 (aq) = Pb2+ (aq) + 2Cl- (aq) 1.43 X 10-2M 1.21 X 102 M O 7.19 X 10-5M O 1.50 M
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