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A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.00 mL. What is the concentration of nitric acid in the final solution?
A strong line in the spectrum of atomic mercury has a wavelength of 254 nm. While mercury emits a photon of light at this wavelength, the frequency of this light is
An equilibrium mixture contains N2O4 ( 0.28 atm ) and NO2 ( 1.1 atm ) at 350 K. The volume of the container is doubled at constant temperature. Calculate the equilibrium pressures of the two gases when the system reaches a new equilibrium.
A 250g sample of gaseous Cl2O7 is placed in a 4.00L flask at 25 degrees C and begins to decompose. When equilibrium is established, the pressure of oxygen is 6500 mm. Calculate the total pressure in the flask at equilibrium and the Kp value.
The gas is allowed to expand against a constant external pressure of 1 bar until it reaches mechanical equilibrium. What is the final temperature of the system. How much work was obtained.
A pure substance can exist simultaneously as a solid, liquid, and vapor only at: 1. the critical point 2. at the triple point 3. at the boiling point 4. at no temp. 5. at all temp.
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K .What is the composition of the mixture by volume?
Explain which is the best acid to use in the preparation of a buffer with pH = 9.3
what is the molecular formula for a substance that contains in 1.00 mole of sample 1.00 mole of S, 24.1 x 10^23 atoms of F, and 71.0 grams of Cl
calculate the ph of the final solutiona solution is made by dissolving 25.6 g of naoh in approximately 450 ml of
If one mole of ethane gas (C2H6) is burned in oxygen to CO2(g) and H2O(l), with the simultaneous release of 1560 kJ at standard state conditions, what is the value of delta H, for C2H6
question the compound mgi2 times xh2o is analyzed to determine the value of x. a 1.557-g sample of the compound is
Question- You need to make an aqueous solution of 0.213 M manganese(II) sulfate for an experiment in lab, using a 500 mL volumetric flask. How much solid manganese(II) sulfate should you add. answer in grams
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