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The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of : (1) Lead (2) Nitrate (3) Iron (4) Fluoride
if 600 j of heat are added to 50 g of water initially at 20 degrees c.how much energy is this in calories?what is the
given that the solubility of o2 in water at 0 degrees c is 14.7ppm calculatenbspa the concentration of dissolved o2 in
although we usually think of substances as burning only in oxygengas the process of rapid oxidation to produce a flame
Consider the arrangement of bulbs shown in the drawing. Each of the bulbs contains a volume of gas as shown. PN2 = 700. torr, PNe = 206 torr, and PH2 = 402 torr. What is the pressure of the system when all the stopcocks are opened, assuming that t..
during lab you measured the ph of common household items. write net broslashnsted equations that show the acidic or
benzyl chloride c6h5ch2cl reacts with ethanolic koh to form two products.give their identities and suggest how they
In performing a superconductor lab with Yttrium oxide, barium peroxide, and cupric oxide, explains what is the importance of compressing the pellet for a solid-state reaction? Explain what would be the difference between reactions in solution and ..
A 2.0 L-reaction flask initially contains 0.17 mol CO, 0.15 mol H2, and 0.10 mol CH3OH (methanol). If this mixture is brought in contact with a zinc oxide-chromium(III) oxide catalyst, the equilibrium shown below is attained.
Calculate the lattice energy of NaCl. Heat of sublimation is 108kj/mol and Heat of NaCl is -411kj/mol. Energy to dissociate .5 mole of Cl2to an atom of Cl is121.4 kj/mol.
A solution is composed of ethanol and water. The solution density is 0.964 g/mL. The partial molar volume of ethanol and water is 52.0 mL/mol and 17.0 mL/mol respectively. What is the composition of liquid by mass
How will understanding the mechanism of a chemical reaction affect your determination of a rate law
how many of joules of heat are needed to raise the temperature of 10.0g of aluminum from 22 degrees c if the specific
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