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What mass of Na3PO4 is required to prepare 250.0ml of a solution which is 0.30m in sodium phosphate?
1calculate the total pressure in atm of a mixture of 0.0270 mol of helium he and 0.0200 mol of oxygen o2 in a 4-l flask
What is the minimum external voltage one must supply in order to perform the electrolysis of molten CaCl2. Show work, explain, and suggest a means for supplying this energy.
A certain quantity of a gas occupies 61.3 mL at 68 ?C. If the pressure remains constant, what would be the volume of the gas at 128 ?C?
The equivalence point is reached after addition of 25.0 ml Naoh a) calculate the ionication ka for the acid HA
Find the pH of the equivalence points and the volume of 0.0372 M NaOH needed to reach it in titrations of 28.9 mL of 0.0850 M H2SO3
The few gas analysis shows as carbon dioxide 14%, carbon monoxide 0.4%, oxygen 5.6% and nitrogen 80%. The air used has a dew point of 50°F. The barometer shows 29.9 inches of mercury. Calculate the dew point of the stack gas.
Compound X and Y individually melt at 63-64 degrees C. If you do a mixture melting point, what results would be observed if
Copper dissolves in nitric acid, producing copper (ll) nitrate. After reaction with sodium hydroxide and heating, copper nitrate changes to copper (ll) oxide. Calculate the percent yield of this process if 1.075 g of copper produced 1.075 g of cop..
During the late 1800's, hard rock miners replaced candles with carbide lamps for work in mine shafts. The lamps worked by dripping water onto calcium carbide that generated acetylene gas (H2C2) that was burned.
Galactose and glucose compose lactose, which is referred to as milk sugar. What is the molecular formula of galactose if the empirical formula is CH2O
Given that Kp for 2SO2(g)+O2(g)=2SO3(g) equals 3.18 at 1000K. Figure out what must be the value of Kc for this same equilibrium.
Calculate the concentration of the acid solution after all teh metal has reacted. Assume that the volume remains unchanged.
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