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Evaluate the advantages and disadvantages of UV treatment compared to chlorination.Which method is recommendable for a small town wishing to construct new water treatment facilities and why?
Ag electrode in 1.0 M Ag + (aq) and Cu electrode in 1.0 M Cu 2+ (aq). What is the cell potential when the solutions are altered, so [Ag+] = 1.25 M and [Cu 2+] =0.25 M
Which of the following would be expected to have the lowest vapor pressure at room temp. a-Ethanol, bp= 78C b- methanol, bp= 65c c- water, bp = 100C d- acetone, bp= 56C
After tert-amyl chlorid has been distilled, one notices that there is some liquid remaining and this liquid distills at approximately 373.15K.
How much heat (in ) is required to warm 10.0g of ice, initially at -11.0(degrees C), to steam at 113.0(degrees C)? The heat capacity of ice is 2.09(J/g* degrees C) and that of steam is 2.01(J/g*degrees C) .
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal.
How many moles of H3O+ must be added to 482 mL of a solution to adjust the pH from 8.80 to 5.56? Use E notation and 3 significant figures.
A solution contains 0.063g of oxalic acid, H2C2O4*2H2O, in 250 mL. What is the molarity of this solution?
The density of lead is 11.3 g/ml. The water level in a graduated cylinder initially at 220mL rises to 297mL after a piece of lead is submerged. What is the mass in grams of the lead?
after 50 g of certain substance is heated in air until no further reaction occurs 39.9 g of metal is left. is the
Convert lb mol CaC2 feed to lb and calculate lb inerts added. The total lb solids in the slurry is then the sum of the Ca(OH)2 plus inerts. In calculating the water added, remember that some is consumed in the reaction.]
Which of the following pairs of molecules is listed in order of decreasing net dipole moment (from more polar molecule to less polar molecule) A. SF4 > CF4 B. CO2 > SO2 C. CCl2F2 > CH2F2 D. XeF4 > SeF4
A 1.5991 g sample of a hydrocarbon is combusted to give 1.6918 g of H2O and 5.1661 g of CO2. What is the empirical formula of the compound
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