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Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 4 state to the n = 1 state.
Mixture where particles remain in semipermeable membrane, Particles of this mixture remain inside a semipermeable membrane. What is it Solution, colloid or suspension?
a sample of gas occupies 328 mL at 20 degrees C. What is its volume when the temperature is increased to 45 degrees C.
A 12.0-g sample of ice at -19.0°C is mixed with 115.0 g of water at 72.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
What factor determines whether a carbon atom in a compound is chiral? Draw the Lewis structure for each of the following functional groups: alcohol, ether, aldehyde, ketone, carboxylic acid, ester, amine.
Determine the mass percentage concentration of a sodium hydroxide solution produced by mixing 50.0 mL of a 25 % (density=2.45g/mL) sodium hydroxide solution with 10.0mL of H 2 O?
If 3.30ml of vinegar needs 45.0ml of 0.130M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10qt sample of this vinegar?
Method for Trapping a Gas, The decomposition of 3-sulfolene to form 1,3-butadiene generates 1 mole of sulfur dioxide gas per mole of 1,3-butadiene. Substantial quantities of SO2 would be generated if this decomposition were carried out on a large ..
Determine the mass in gms for pure Ag sample that loses 2.88kJ if its temperature drops from 143 degree celsius to 28 degree celsius.?
Determine what %by weight of sodium carbonate does it contain if the specific gravity of the silver nitrate solution = 1.25?
The infrared spectrum of the xanthene reduction product contains evidence that demonstrates that conjugation of the rings is still
If, in a certain experiment, over a specific time period, 0.0033 mol PH3 is consumed in a 1.5-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
A tightly sealed 5.0 L flask contains argon at 69.0 deg. C and 781 mm Hg. The flask is heated until the pressure is doubled. What it the temperature of the gas.
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