Tao water in a copper mining community was found to contain 202 mg of copper in...
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.
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: %...
Copper is a toxic metal routinely found in older piping systems. Water treatment plants must report to EPA any values of copper ions in their water that exceed 1.3 mg/L, as it is hazardous above this level. Water running through the pipes contains bicarbonate at a fixed concentration of 95 mg/L (reminder: pK_a2 = 10.35 for carbonate system). Assume that copper is present in pipes as copper (II) carbonate [solid], which can disassociate into water per the equation below: CuCO_3(s)...
A sample of seawater from a tidal estuary was found to contain a concentration of 825 mg of chloride ion per kg of seawater. If the density of the sample was 1.035 g/mL, what is the molarity of the chloride ion?
If a 150 mL sample of water from a lake is found to contain 1.7 μg of arsenic (As), what is the concentration of arsenic in the sample in parts per billion (ppb)?
Q5) A 63.5 g sample of ground water is found to have a lead concentration of 19.85 ppm. Calculate the mass of lead in the sample in milligrams. Q4) A 2105 g sample of ground water is found to contain 0.0500 g of arsenic. Calculate the concentration of arsenic in parts per million, ppm.\
4. A 202. gram sample of copper (C =0.20 j/g-deg. C) is heated to 85.0 deg. C and then placed in a container of 100.0 grams of water at 19.2 deg. C. What is the final temperature of the system?
if a hydrate was found to contain 12% water and original weight of the sample was 30g, what will be the final weight of the anhydrous sample
A stock solution of analyte is made by dissolving 34.83 mg of copper (II) acetate hexahydrate (fw = 289.73 g/mol) in 25.000 mL of water. A second stock solution of internal standard is made by dissolving 28.43 mg of germanium (I) acetate (fw = 190.74 g/mol) into 25.000 mL of water. These solutions are used to make a series of standards for flame atomic absorption analysis calibration. The standard solutions (each 10.00 mL total volume) should have the following concentrations...
PLEASE HELP DUE IN 15 MINS A 10 g of water was found to contain 10 mg of Hg2+ What is the concentration of Hg in ppm? (ppm = (mass of solute/mass of solvent)x1067 O A 1000 08.10 OC 100 OD 10000 OE 100000 A water solution has 146.0 g of HCl and 288 g of water. What is the mole fraction of HCl in this solution? [mole fraction of component = moles of component/total moles of all components] Please...