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Determine the solubility of CO2 in soda water at 25°C if the pressure of CO2 is 5.2 atm. The Henry's law constant for carbon dioxide in water at this temperature is 3.4 × 10-2 M/atm.
Write the reaction equation of MCO3 and HCl; (b) Calculated the Molecular Mass of MCO3. (c) Determine what is this sample: CaCO3 ; MgCO3; or BaCO3 ?
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K. What is the composition of the mixture by volume?
Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH. What is the molecular weight of the unknown acid HZ?
How many grams of sodium chlorida are in 100 mL of water if the vapor pressure of the solution is 630 torr @ 20 C? Given that the vapor pressure of pure water is 1 atm @ 20 C.
Calculate the wavelength of a 141 g baseball in nm at this speed. What is the wavelength of a hydrogen atom at the same speed?
A 42 gram block of an unknown metal at 86.0oC was dropped into an insulated flask containing approximately 50.0 grams of ice and 20.0 grams of water at 0oC. After the system had reached a steady tem
He wants to make 800 mL of 0.04 mol/L solution. How many mL of the stock solution should he use to make this solution?
A dissolve 8g of Ammonium iron (II)sulfate in 25cm3 of water that has been acidified with 1cm3 of 2M sylfuric acid.Add solution of oxalic acid (5g in 30cm3 water) and boil.Filter the yellow prepitat
What is the pH of a solution obtained by dissolving two extra-strength aspirin tablets, containing 480 mg of acetylsalicylic acid each, in 210 mL of water?
after 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32.
A 0.560-g sample of acetic acid is added to enough water to make 50.00ml of solution. Calculate [H+], [CH3COO-], [CH3COOH], and the pH at equilibrium. Ka for acetic acid is 1.8x10-5.
CHCOOH ↔ CH3COO- +H+ Write the equilibrium expression for the reaction. What is the concentration of H+ if the pH is 4.5? How would the concentration of each species change if H+ was added to t
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 268 {rm torr}. Pure pentane and hexane have vapor pressures of 425 {rm torr} and 151 {rm
If 414 mL of a gas measured at 26°C and 641 torr has a mass of 0.384 g, what are the molecular mass and molar mass?
The flask was then shaken until the solution was uniform. A 30.0-mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
Concentrated stock HCl has a molecular weight of 36.46 and contains 32g of salt for every 100g of acid (termed as 32% w/w). To prepare molar solutions %w/w must be converted into %w/v by considering
An oxygen tank kept at 20.0?C contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 20.7 atm. How much oxygen was used during the two-week period?
The Michaelson-Menten mechanism for enzyme catalyzed reactions. Use this equation to discuss how subcellular localization of biochemical function is acheived.
When 157 mg. of dipentylamine was added to 122 mg. of benzoic acid and 2 mL of water, a completely homogenous solution was formed. Draw the structure of the species present int the water.
What's the total pressure generated by a mixture of gases if the pressure of oxygen is 465 mm Hg, the pressure of nitrogen is 1.1atm and the pressure of chlorine is 501 torr? Report your answer in t
Draw the structure of a hydrocarbon that reacts w/ 2 equivalent of H2 (H sub 2) on catalytic hydrogenation and gives only succinic acidon reactions with acidic KMnO4 (KMnO sub 4).
Gas tank holds 42kg of gasoline. When gasoline burns, 147kg og oxygen are consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is prod
The assembly expands from an initial volume of 0.80 L to a final volume of 5.88 L against an external pressure of 1.0 rm atm.Calculate w.
a balloon filled with helium gas has a volume of 762 mL at a pressure of 1atm. The balloon is released and reaches altitude of 6.5km, where the pressure is 0.5atm. Assuming that the temperature has