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At what radius does the probability of finding an electron at a point in the H atom fall to 50 per cent of its maximum value?
One series of lines of the hydrogen spectrum is caused by emission of energy accompanying the fall of an electron from outer shell to the fourth shell. The lines can be calculated using the Balmer-Rydberg equation
The carbon and amino nitrogen of muscle alanine are radiolabeled with 14C and 15N respectively. Outline the metabolic journey that could result in the presence of
chloromethane gas (CH3Cl) at 20.0 degrees celsius and 0.973 atm pressure. The molar mass of a chloromethane is 50.5 g/mol.
Calculate the number of grams of H2 formed If the wet Hydrogen gas formed occupies a volume of 9.67 Litres
If 285.5 mL of SO2 reacts with 158.9 mL of O2 (both at 315K and 50.0 mmHg) what is the limiting reactant and theoretical yield of SO3
What is the minimum number of microwave photons with a wavelength of 3.07 mm that will have to be absorbed by a 126.00 gram sample of water to heat it from 25°C to 100°C?
Compound A is unchanged when treated with dilute base, but treatment of A with concentrated NaOH and heat gives a new compound B (C10H19N) that decolorizes Br2 in CCl4. Compound B is identical to the product obtained from the reaction sequence bel..
Three gases (8.00G of methane CH4, , 18.0G of ethane C2H6, , and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 C, the total pressure in the container is 3.90ATM. Calculate the partial pressure of each gas in ..
A child discovered that her coin is missing and there is a hole in her pocket. She turned back and walked 24m east along the sidewalk. Then, she stopped for 18s and decided to head back to school.
In the first 12.0 of the reaction, 1.8×10-2 of is produced in a reaction vessel with a volume of 0.260 . What is the average rate of the reaction over this time interval.
You need 70.2 J to raise the temperature of 34.0 g of ammonia from 23°C to 24°C. Calculate the heat capacity of ammonia.
Calculate the overall energy change (in kilojoules per mole) for the formation of Csf from its elements using the following data.
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