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How do you find wave length of light emitted by hydrogen atoms?
Consider that there is 26.38 g NaCl in a solution that has a total volume of 1,780 mL with a density of 0.8495 g/mL. A) What is the molarity of NaCl B) What is the mass/mass % C) What is the molality
Henderson- Hasselbalch mayn't always be successful at predicting pH. First, define some theoretical instances when HH may not be valuable. Secondly, using acidic acid model pKa
An engineer is designing a reactor that will be filled with oxygen under high pressure. The volume of the reactor is 253 L, the maximum temperature inside the reactor will be 250ºC, and the pressure inside the reactor must not exceed 150 atm. The eng..
Problem- A student mixes 5.00 ml of 0.0020 M Fe(NO3)3 with 2.00 ml of 0.0020 M KSCN solution and 3.00 ml water at a certain temperature. The places a sample of the resulting solution in a spectrometer, and measures the transmittance as 26% at 447 ..
consider a hydrogen atom in the ground state. what is the energy of its electron? Now consider an excited- state hydrogen atom. what is the energy of the electron in the n=2 level
The sulfur is converted first to SO2, which reacts with oxygen and atmospheric moisture to produce sulfuric acid, H2SO4. If a particular coal contains 0.95% sulfur (by mass), calculate the mass of sulfuric acid produced by burning a metric ton (10..
A sample of gas is compressed from 13.01 L to 4.27 L using a constant external pressure of 3.63 atm. At the same time, 1,453 J of heat flows into the surroundings. What is the internal energy change for the gas
Please In the hydrolization of aspirin, why is the mixture simmered gently and carefully during hydrolysis and why is it unwise to boil it vigorously
A sample of nitrogen gas in a 4.6-L container at a temperature of 26°C exerts a pressure of 3.9 atm. Calculate the number of moles of gas in the sample.
Equation 1-3 for multiple standard additions. Use that relationship further to obtain an equation for the unknown concentration cx in terms of the slope and intercept of the standard additions plot, similar to Equcation 1-4.
Question- A crystal lattice has copper at all the corner positions and nickel at all the face positions in a unit cell. What is the formula of the unit cell
what is the approximate concentration of the unknown solution
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