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The Debye-huckel limiting law is more reliable for 1:1 electrolytes than for 2:2 electrolytes. Why?
When 325 g Bi2O3 reacts with excess carbon, how many moles of Bi are expected to form?
If 3.93 g of sodium borohydride contains 2.5 × 10e23 H atoms, how many moles of H are present in 33 cm3 of sodium borohydride (of density 1.074 g/cm3)?
The end products of the oxidation are carbon dioxide (CO2), ammonia (NH3), and water. Assume that nitrogen not incorporated in cell-tissue production will be converted to ammonia.
aluminum and oxygen react to form aluminum oxide. How many L of oxygen at 296K and 1.4 atm of pressure are necessary to form 3.25g of aluminum oxide.
The temperature of the water was 22 Celsius and thebarometric pressure was 735.8 mm Hg. What is the vapor pressure of the water? What is the pressureof dry hydrogen gas?
What volume of 0.855 M KOH solution is required to make 3.55 L of a solution with pH of 12.4?
The shielding of electrons gives rise to an effective nuclear charge,Zeff , which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively
calculate the potential of a platinium electrode immersed in a solution prepared by mixing 25.00ml of 0.0918 M SnCl2
For each reaction between a ketone and an amine, draw the curved arrow(s) to show the first step of the mechanism, then draw the final organic product
How much energy would be required to melt 26 g of HCl at its melting point of -110.8 ?C?
Suppose that the microwave radiation has a wavelength of 10.7 cm. How many photons are required to heat 200. mL of coffee from 25°C to 65°C?
A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 161 J of heat from the surroundings. Calculate the change in energy of the gas.
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