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Chlorine is used to disinfect swimming pools and the accepted concentration for disinfection is 1.0 ppm (1 g chlorine per one million grams of water). If a pool with a lenght of 14.0 ft and a width of 16.0 ft requires 1250 mL of a 5.0% slution of clorine by mass to disinfect it, what must the depth of the pool be (in ft)? Water density = 1.00 g/ml, 5.0% solution density = 1.02 g/ml
An energy maximum in a reaction-energy diagram would be labeled as which of the following?
how many liters of O2 can be made from 342 g H2O2 if the density of O2 is 1.428 g/L?
An unknown compound with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat
A hot tub is filled with 480 gallons of water, which has a density of 1.0 {rm g/mL}. What is the volume of water in the tub, in liters?
What mass of rm NaOH is needed to precipitate the rm Cd^{2+} ions from 35.0 mL of 0.540 M rm Cd(NO_3)_2 solution?
Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves
compressed gas cylinder contains 1.00 x 10^3 g of argon gas. The pressure inside the cylinder is 2050 psi at a temperature of 18 C.
What mass of MgCl2 in grams must be added to 1.00 kg of water to prouce a solution that boils at 103.0 degrees celsius
Explain why the salt of a weak acid, as well as the acid itself, must be present to form a bu?er solution.
Calculate the mass of pure silver that when heated from 12.0 degrees celcius to 15.2 degrees celcius it required 1.25 kj of energy
Estimate the temperature at which calcium carbonate is likely to decomp under 1atm of pressure. Reaction: CaCO3(s) -> CaO(s) + CO2 (g) For this rxn: dHstandard = 177.8 kJ and dS standard= 160.5 J/K (notice unit differences)
Designing and preparing aqueous buffer solution with the pH indicated - Give complete details of the design and preparation of an aqueous buffer solution (volume 100ml) with the pH indicated.
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