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A 34.9-g sample of an unknown metal, initially at 232.8oC, is immersed in a 17.0-g sample of water (specific heat = 4.184 J g-1 oC-1), initially at 15.4oC, in an insulated cup. Once equilibrium is r
Acid precipitation is the term generally used to describe rain or snow that is more acidic than normal. One cause of acid precipitation is the formation of sulfuric and nitric acids from various sul
What is the molecular formula of the compounds created by FeCl3 + Na2CO3
Determine the value of the standard potential, Eo, for a galvanic cell based on the reaction between AgNO3(aq) and solid Zn at 25 C.
If an equilibrium mixture is 1.0 M SO3 and has equal concentrations of SO2 and O2, what is the concentration of SO2 in the mixture? Does this result agree with what you expect from the magnitude of
Why is the symbol of the silicon-oxygen tetrahedron (SiO4)4-?
How does the strength of the attraction between water molecules and sodium and chloride ions compare with the strength of the attractions between the sodium ions and chloride ions? how do you know?
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced?
From the magnitude of Kc, do you think this reaction occurs to any great extent when equilibrium is reached at room temperature? If an equilibrium mixture is 1.0 M SO3 and has equal concentrations o
Predict how the ratio of the equilibrium pressures, PSO2, would change when the. PSO3 temperature of the uncatalyzed reaction mixture is increased. Justify your prediction
Assume that the wet limestone process requires 1 metric ton of CaCO3 to remove 90% of the sulfer from 4 metric tons of coel containing 2% S. Assume that the sulfur product is CaSO4. Calculate the pe
A solution to replace potassium loss contains 40. mEq/L of K+ and Cl-. How many moles of K+ and Cl- are in 1.5 L of the solution?
A stock solution of NaCl is made taking 150.2g in enough water to make 200.0ml. A 10.00 ml sample of this stock solution is diluted to 250.0 ml. What is the concentration of the final solution
How many grams of sodium lactate (NaC3H5O3) should be added to 1.00 L of 0.260 M lactic acid (HC3H5O3) to form a buffer solution with pH 2.90?
How many grams of methane [CH4(g)] must be combusted to heat 1.00 kg of water from 25.0°C to 90.0°C, assuming H2O(l) as a product and 100% efficiency in heat transfer?
The temperature of a sample of helium at 85 kPa is 37 degrees Celsius. If the volume of the gas remains constant, at what temperature (in Celsius) would the pressure of the gas be at 98 kilo Pascal
If 3.22 mol of helium is added to this cylinder, at constant temperature and volume, what will be the pressure in the cylinder?
To what Celsius temperature must 63.0 mL of methane gas at 86.0°C be changed so the volume will be 50.0 mL? Assume the pressure and the amount of gas are held constant.
They are allowed to come to the same temperature. what is the final temperature of the glass-water mixture? The specific heat of glass is 2.1cal/deg C*g.
What is the volume of a sample of chlorine gas with a density of 0.0032 g/cm3 and a mass of 1.45 g?
What is the maximum volume of nitrogen measured at 1.00 atm and 37°C that could dissolve in the diver's blood plasma at a depth of 93 m, where the pressure is 10.0 atm? Assume that Henry's const
When 0.629 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 102C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the he
A student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate. 3.2349 g of sodium carbonate was produced. Calculate the atom economy of this reaction.
if the heat of neutralization of aqueous benzoic acid is 54.6 kj/mol, what is the enthalpy of ionization on benzoic acid.