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Determine the procedure to make 250ml of 0.1M H3PO4 from concentrated 85%(by mass) H3PO4. The densitity of 85% H3PO4 is 1.685g/ml. ( must show work to get any rating or points)
If 155 of wet is collected over water at 24 and a barometric pressure of 738 , how many grams of have been consumed? (The vapor pressure of water is 22.38 .)
Balanced thermochemical equation and enthalpy diagram, The decomposition of zinc carbonate, ZnCO3(s), into zinc oxide, ZnO(s), and CO2(g) at a constant pressure requires the addition of 71.5kJ of heat per mole of ZnCO3.
If a space probe weights 39,200 N on the surface of earth, what will be the mass of the probe on the surface of mars.
This precipitate was removed and the excess hydrazine was found to be equivalent to 75 mL of 2.50 X 10-2 mol/L acidified potassium iodate(V)
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
.914g sample of stannous flouride gives a 1,078g precipitate of stannous phosphate. calculate the theoretcial yeild?
Calculate the pressure in the flask in atmospheres and torr also If the sealed-tube manometer in had a height difference of 20.0 inches between the Hg levels?
Determine theoretical yield, limiting agent and excess reagent - How much excess reagent remains after the reaction goes to completion
The equilibrium constant, Kp, for the following reaction is 0.497 at 500 K: PCl5(g) PCl3(g) + Cl2(g) Calculate the equilibrium partial pressures of all species when PCl5(g) is introduced into an evacuated flask at a pressure
If you dilute 750.00 mL of a 4.117 × 10-4 M solution into a 2.00 L volumetric flask and fill to the line with water, what would be the final concentration of the solution?
when perfoming a distillation some of the material will vaporize but will not collect in the reservoir of the Hickman head
The reading on a mercury manometer at 25 deg C (open to the atmosphere at one end) is 56.38 cm. The local acceleration of gravity is 9.832 m s-2.
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