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Many plants are poisonous because their stems and leaves contain oxalic acid, H2C2O4, or sodium oxalate, Na2C2O4; when ingested, these substances cause swelling of the respiratory tract and suffocation. A standard analysis for determining the amount of oxalate ion, C2O42-, in a sample is to precipitate this species as calcium oxalate, which is insoluble in water. Write the net ionic equation for the reaction between sodium oxalate and calcium chloride, CaCl2, in aqueous solution.
It is known that the Co2+-ligand complex obeys the Beer-Lambert Law. Calculate the mass percentage of the cobalt in the original sample.
How is HCl a base if it has no OH ions in is formula to omit when dissolved? Where does it's O come from
A. Write a net ionic equation . B- for the reaction in part a, write the equilibrium constant from a consideration of Kb and Kw. C- calculate the h3o^+ for a 0.45 M nh4cl solution . D- calculate the percent of hydrolysis of 0.45 M NH4Cl.
What is the empirical and molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen and 48.68% fluorine if the molar mass of this compound is 156.12 g
170 ml of an hcl solution with ph of 2.30 is added to 200 ml of an hno3 solution. the resulting ph is 1.40. what was
The solid and toluene together weigh 51.05 g. The density of toluene at the temperature of the experiment is 0.864 g/mL. What is the density of the solid
What ions and/or molecules are present in relatively large proportions in a solution of a strong acid HI (aq)?
Calculate the amount of N2 gas released (in liters at 37°C and 1.2 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
patients undergoing an upper gi tract lab test are typically givenan x-ray contrast agent that aids with the radiologic
The pH of a bicarbonate-carbonic acid buffer is 6.95. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-)
Liquid nitrogen has a density of 0.807 g/mL at -195.8 °C. If 1.00 L of N2(l) is allowed to warm to 25°C at a pressure of 1.0 atm, what volume will the gas occupy.
magnesium has three naturally occurring isotopes 24mgisotopic mass 23.9850 amu abundance 78.99 25mgisotopic mass
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