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a:2.0g of NaHCO3 was obtained from the reaction of 5.85g NaCl with excess NH3 and CO2 in water. Calculate the theoretical and percent yields
b: 20.0g of NaHCO3 is heated to form Na2CO3. Calculate the theoretical loss in weight on heating
A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4 C. What mass of ammonia is in the container?
Atmospheric pressure decreases as altitude increases. In other words, there is more air pushing down on you at sea level, and there is less air pressure pushing down on you when you are on a mountain
Calculate the equilibrium concentration of each compound if 3.10 moles of COBr2 are placed in a 3.00 liter flask at a certain temperature. Kc = 0.140 for the reaction at this temperature.
A flask contains a mixture of two ideal gases, A and B. Show graphically how the total pressure of the system depends on the amount of A present
The equilibrium constant at 25°C is 8.9 × 10-12. One hundred grams of magnesium hydroxide is added to 1.00 L of water and equilibrium is established.
Standard potentials measured against the standard hydrogen electrode, Standard potentials are measured against the standard hydrogen electrode (S.H.E.). Because it is not always convenient to use a S.H.E
Compare the energy of a photon of wavelength 3.4 um with that of wavelength 0.155 nm. answer is in E1/E2
A.117 gram sample of a metal reacts with hyrdochloric acid to produce 36.3 ml of dry hydrogen gas, measured at STP. what is the equivalent weight of this metal?
Write and balance the given chemical equation and Write a balanced equation for this reaction
How do you write orbital diagrams in an a (arrow diagrams) for the following elements: 26Fe, 34Se, 36Kr I d
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0 g of luminol to rm H_2O creating a solution with a total volume of 75.0 rm mL.
Which of the following does not have higher exp. S (entropy) than calculated S in pure H20, Which of the following effects is explained through ion pairing
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