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A water sample was found to contain [Ca2+]=35 mg/L and [Mg2+]=20 mg/L. Determine the water hardness in terms of mg/L CaCO3.and state whether it has low, medium or high hardness.
What fraction of thiocyanate ion is accually converted into the complex ion?
What purpose does Acetic Acid serve in the hypochlorite oxidation of cyclohexanol? What advantages does the hypochlorite oxidation offer over conventional methods such as chromium oxidation?
write a complete ionic equation and if there is a phase change you need to then write a net ionic equation and list the spectator ions copper (ii) sulfate plus silver nitrate equals copper (ii) nitrate and silver sulfate
Why is sulfuric acid, rather than hydrochloric acid, used to catalyze the dehydration of alcohols?2. A sample of 150 mg of an organic compound is dissolved in 7.5 ml of water. The solution is paced in a 20-cm polarimeter tube and the rotation meas..
Calculate the pH change after 100.0 mL of 0.0500M HCl is added to 400.0 mL of a buffer solution that is 0.200M in NH3 and 0.300M
A student added 27.20 cm^3 of 0.200 mol dm^-3 HCL to 0.188 g of eggshell. Calculate the amount, in mol, of HCL added. what is it?
When magnesium nitride is placed in water, it is decomposed to give the same magnesium containing product as formed from magnesium oxide and water. There is also a strongly odored gaseous product formed. What is the gas? Write a balanced equation ..
A vertical force of 7 N (in the negative z direction) is required to hold the deflector in place. Determine the mass (kg) of the deflector. Assume the velocity of the water remains constant.
Calculate the wavelengths of the following objects: a) a muon(a subatomic particle with a mass of 1.884x10^-25 g) traveling at 3.00x10^2 m/s
Describe the Bohr effect in oxygen binding by hemoglobin, including all structural
Three solutions are mixed to form a single solution. One contains 0.2 mol Pb(C2H3O2)2, the second contains 0.1 mol Na2S, and the third contains 0.1 mol CaCl2.
what effect does increasing the temperature have on equilibrium? what effect does adding a catalyst have on equilibrium?
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