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A balloon filled with H2(g) at STP has a volume of 2.24 .What is the final gas volume if 0.10 mol He(g) is added to the balloon and the temperature is then raised to 92.0 celsius while the pressure and amount of gas are held constant?
Determine the molarity of a solution formed by dissolving 468 mg of MgI2 in enough water to yield
Calculate the pH of the solution after a)10.0mL b)20.0mL c)30.0 mL of acid have been added; pkb of (CH3)3N=4.19 at 25 degree celcius.
A gaseous reaction occurs at a constant pressure of 50atm and releases 61.5kJ of heat. Before the reaction, the volume of the system was 7.00L. After the reaction, the volume of the system was 2.60L.
What volume of hydrogen gas is produced when 1.40 mol of carbon monoxide reacts completely according to the reaction at 0oC and 1 atm?
What is the molarity of the resulting solution when 28.249 g of Mn(ClO4)2 · 6 H2O are added to 550.0 mL of water?
This entire mixture is then diluted to 1 liter with water. What is the final concentration of phosphoric acid
A quality control chemist at Dow Chemical tried to determine purity of NaOH using titration.He measured out 0.500 g NaOH sample, and dissolved it in 20 mL water. 31.2 mL of a 0.386 mol/L HCl solution was used to reach the end point.
A mixture of Ar and N2 gases has a density of 1.491 g/L at STP. What is the mole fraction of each gas
the effect of temperature on gases confined to small volumes. What is the pressure of 3.40mol of gas D measured at 251 C in a 1.75-L container assuming real behavior?
During fractional distillation, which of the following chemicals would come out at the top of the tower?.. octane, ethane, wax, or coal tar?
A solution contains 0.22 M CaCl2 and 0.12 M MgCl2. What concentration of hydroxide ions would be required to separate the magnesium as Mg(OH)2 without precipitating the calcium as Ca(OH)2?
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3
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