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Calculate the vapor pressure of water above a solution prepared by dissolving 35.0 of glycerin () in 135 of water at 343 . (The vapor pressure of water at 343 is 233.7.)
Calculate the pH in the cathode compartment if the cell emf = 0.67 V when PNO = 1.00 atm, [Sn4+] = 0.10 M, [NO3-] = 0.010 M, and [Sn2+] = 0.020 M
Calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb if we Assume that the light has an average wavelength = 510.0 nm, .
one cup is equivalent to 237 cm^3. In 1 cup of oil has a mass of 216 g. What is the density of olive oil in g/cm^3
During mixing, heat is lost to the surroundings at a rate of 30 kJ s-1. What is the temperature of the warm water stream? Assume the specific heat of the water constant at 4.18 kJ kg-1 K-1.
Find the mass of urea (CH4N2O) needed to prepare 50.8 g of a solution in water in which the mole fraction of urea is 7.55×10?2.
The visual raw meat color was red(outside) and brown(inside) and when mixed with NaNO2 and NaNO3 the color changed to slight maroon and medium brown and pink.
which element has the greatest density at STP? and why?
In the following reaction, what mass of mercury(II) oxide, HgO, would be required to produce 473 L of oxygen, O2, measured at STP
Benozoic Acid has a Ka = 6.3*10^-5. A 35.0mL sample of 0.130 M Benzoic Acid is titrated with 0.150M NaOH solution. Find the pH after 0.0mL NaOH is added.
sulfuric acid from an automobile battery requires 35.08 mL of 2.12 M sodium hydroxide solution for complete neutralization. What is the molarity of sulfuric acid ? the reeaction is H2SO4 + 2NaOH to 2H2O+ Na2SO4
When steam (hot water) is passed over iron, hydrogen gas and iron (3) oxide are formed. What weight of steam would be needed to react completely with 100.0g of iron.
A sample of dry air contains 210 mL of oxygen, 780 mL. of nitrogen, and 10 mL of all other gases. What is the pressure in mm of Hg due to the nitrogen if the total pressure was 1000 mm
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