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A 9.00 mL sample of unknown concentration of phosphoric acid, H3PO4 , is titrated with 14.34 mL of 0.1110M Ca(OH)2, what is the concentration of H3PO4?
(a) Write the balanced equation for this process then proceed to solve the problem
(b) Concentration of H3PO4?
A sample of an ideal gas at 1.00 atm and a volume of 1.38 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume.
An unknown metal reacts with oxygen to give the metal oxide, MO2. Identify the metal based on the following information: Mass of Metal: 0.356g
When a certain unknown hydrocarbon is completely combusted with excess oxygen, it is observed that 1.12 L of H2O gas and 3.36 L of CO2 are produced at STP. What is the empirical formula of the unknown hydrocarbon
Calcium fluoride is added to water until the solution is saturated. The calcium ion concentration in the saturated solution is 2.1 x 10-4 M. Compute the equilibrium constant for the dissolution of calcium fluoride.
It takes 24.0 min for the concentration of a reaction in a first- order reaction to drop from 0.35M to 0.25 at 25 degree celsious. How long will it take for the reaction to be 80% complete
50.00g of a metal phosphate with the formula X3PO4 were dissolved in water. Excess calcium nitrate solution was added and 15.69g of precipitate were collected. Explain what is the molar mass of X3PO4. Compute the atomic molar mass of X and a possi..
It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.5 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
The half life of potassium-40 is 1.26X10^9 yrs, if the natural abundance of k-40 is .010% and 3500 disinigrations of k-40 occur every 10 sec in a human body weighing 100kg then what is the concentration of potassium (include all isotopes) in that ..
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
A baby with a severe bronchial infection is in respiratory distress. The anethetist administers heliox a mixture of helium and oxygen with 92.3 % by mass O2. What is the partial pressure of oxygen being administered to a baby if atnospheric pressu..
When ethane (C2H6) reacts with chlorine (Cl2) the main product is C2H5Cl; but other products containing Cl (chlorine), such as C2H4Cl2, are also obtained in small quantities. The formation of these other products reduces the yield of C2H5Cl. In a ..
HOw much enjergy is required to produce 450g of C6H12O6?
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