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A rigid container of gas has a pressure of 1.72 atm and temperature of 21oC. If the temperature increases to 85oC, what is the new pressure in atm?
consider the combustion of ethane2c2h6 7o2 yields 4co2 6h2oif the ethane is burning at the rate of 0.1 molls at what
the solubility product constant for MgF2 is 6.4 × 10-9. How many grams of MgF2 will dissolve in 150 mL of H2O at 25°C?
If .43 g of aluminum foil was dissolved in sufficient 3M KOH solution, and the solution was acidified with 4M H2SO4, what was the theoretical yield of KAl(SO4)2 * 12H2O? If only 5.87g of alum were obtained as product from the synthesis described
The freezing point of t-butanol is 25.50°C and Kf is 9.1°C·kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 12.0 g sample of t-butanol is 24.59°C, how many grams of water are present in the sample?
How much water mass must be added to .45 moles of glucose to make a 15% by mass solution. The molar mass of glucose is 180 g/mol
Write a complete mechanism for the addition of diethyl malonate to ethanal in the presence of base to form a beta-hydroxy ester.
Presume that you have a solution of AsCl(3) with a concentration of 1*10(^-8) M. Presume the density of the solution is 1.00 g/mL. The molar mass of AsCl(3) is 181.28 g. Exchange this concentration to ppb on a mass to mass basis.
The air in the balloon is then heated to 62 degree celsius, causing the balloon to expand to a volume of 4.20x10^3 m^3. What is the ratio of the number of moles of air.
The volume of a 24.0-g sample of methane gas is 22.8 L at 40.0°C and 4.00 atm. What will its volume be at 68.0°C and 4.00 atm.
The mass of a helium atom is 4.0026 amu, and its average velocity at 25 degrees Celcius is 1.36 x 103 m/s. what is the uncertainty (in meters) in the position of a helium atom if the uncertainty in its velocity is 5%
What mass of sodium cyanide must be added to 250ml of water in order to obtain a solution having a pH of 10.50? Ka(HCN) = 4.9 x 10 ^-10
For weak acid, HX, Ka = 1.0 10^-6. Calculate the pH of a 0.82 M solution of HX.
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