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A balloon was filled to a volume of 2.50 rm L when the temperature was \rm 30.0^{\circ}C. What would the volume become if the temperature dropped to rm 11.0^{circ}C.
Calculate the concentration of Cu in the chloroform phase if 39 mL of a 0.28 M aqueous Cu solution buffered to pH 4 is equilibrated with 12 mL of chloroform.
What mass of sucrose should be combined with 488 of water to make a solution with an osmotic pressure of 8.25 at 280.
NaOH are required to neutralize 1.22g of an unknown acid, HA, what is the molecular unit of the unknown acid? Balanced equation: NaOH + HA --> NaA + H20
A buffer is prepared by mixing 161 mL of 0.193 M NaOH with 695 mL of 0.687 M sodium bicarbonate (NaHCO3). Given that the Ka1 of H2CO3 is 4.5 x 10-7 and the Ka2 is 4.7 x 10-11, calculate the pH of the solution.
What is the formula for the compound formed between germanium with a valency of (IV) and iodine
How many molecules are in 22.41 L of an ideal gas at STP? Remember the answer is supposed to be in molecules
A gas has a volume of 263 mL at 729 torr. What volume will the gas occupy at 368 torr if the temperature of the gas doesn't change?
Three colorless solution in test tubesm whit no labels arein a test rack on the laboratory bench. lying beside the test tubesare three labels, potassium iodide, KI, silver nitrate, AgNO3 andsolution sulfide Na2S
Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. The osmotic pressures required for this process can be as high as 20.1 atm
Octane or C8H18 (l) is a component of gasoline. If 35.0 mol O2 (g) in the air is used to burn a sample of octane completely. How many grams of carbon dioxide gas are produced
For each parameter listed, explain whether or not a change in the parameter will have an effect on the retention time of a compound.
Calculate the concentrations of all species at equilibrium for each of the following cases. (b) 1.0 mol pure HOCl is placed in a 2.9-L flask. exact answer only please.
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