a) A water sample (density=1.00g/mL, S=0.28g/kg) contains Ca(2+) at a concentration of 42 mg/kg. Calculate the molarity of the ion.
b) A water sample with a salinity of 35pptand a density of 1.025g/mL contains Ca(2+) concentration at 0.42g/kg. Calculate the molarity of the ion.
a) A water sample (density=1.00g/mL, S=0.28g/kg) contains Ca(2+) at a concentration of 42 mg/kg. Calculate the...
A solution contains 20 ppm Ca+2. Express the Ca+2 concentration in the following terms: 21. A solution contains 20 ppm Cat2. Express the Ca+2 concentration in the following terms: a. g Cat2 in 1,000,000 mL water (mL = 0.001 L) b. g Cat2 in 100 mL water c. % Cat2 in the 100 mL water d. mg Ca 2/kg water (mg = 0.001 g = 0.000001 kg) e. molarity (M or moles Cat2/L).
The concentration of Mg+2 ions in a sample of coastal seawater is 1.09g/Kg. What is the molarity of Mg+2 in this seawater? (Assume the density of seawater is 1.02g/ml).
1. The LD50 of cocaine is 95.1 mg/kg. Calculate the concentration of a solution, in molarity if they drank 1 liter of it. 100 g / 303.346 g/mol = 0.329 mol of cocaine. 0.329 mol/ 1 L= 0.329 M for molarity. Is this correct? 2. Find one other concentration unit [mass/mass (g/g) or mass/volume (g/ml) percentage, ppm or ppb] that would be toxic to a 85 kg person. Assume the density of a solution of your substance is the same...
3-1) A water sample contains 10 mg NO3-/L. What is the concentration in (a) ppmm, (b) moles/L, (c) mg NO3--N/L, and (d) ppbm? Assume density of water solution = 1 kg/L Please show all the calculations! All answers in 3 significant digits (4 if the number starts with “1”)
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?
Problem 4: EDTA titration with 16.55 ml of o.0114 M EDTA at pH-10. A 50.0 mL sample of water containing both Ca? and Mg is titrated in another 50.0 mL sample, the Mg* was precipitated as Mg(OH)2 and then, Ca2* was titrated at pH 13 with 9.25 ml of the same EDTA solution. Calculate ppm CaCo, (FW-100.09) and MgCO, (FW-84.31) in the sample. FWca: 40.08; FWm: 24.30 Problem 4: EDTA titration with 16.55 ml of o.0114 M EDTA at pH-10....
Name: 1.00g NaCl Volume: 100.34 mL Species (aq) a) The solution labeled 'Solution 1' contains 2.00 g NaCl. How many grams of AgNO3 must be added to the solution to the solution to completely react with NaCl according to the reaction in the background section? Molarity 1.00481e-7 1.00481e-7 0.170529 0.170529 OH Na CI Record the values for the concentration (molarity) for the Nat and Cl' species. 1. Calculate the number of grams of each species and please show work. Name:...
Calculate the concentration in % (w/w) 0f the following solutions. Assume water has a density of 1.00g/mL. A. 6.5 g of table salt and 100. mL of water B. 6.5 g of any solute and 100. mL of water C. 6.5 g of any solute and 100. g of any solvent
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all calcium cations are present as calcium chloride, calculate the mass percentage of CaCl2 in plasmia in mg%. [Answer: 26.9 mg%] 4. The mass percentage of iron as an element in blood is 50 mg%. Calculate the mass of iron cations in 5 kg of blood. [Answer: 2.5 g] prep a SorutioI 0.Which mass of water should be added to 75 g of a 5%...
Calculate the concentration in units of mg/L for oxygen dissolved in 1050.0 mL of water at 25 °C, if the partial pressure of O2 in gas phase in equilibrium with the water is 238.1 mm Hg. Assume the density of water =1 g/mL