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Hydrogen atoms are excited by a laser to the n = 4 state and then allowed to emit. What is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 1-2-3-4-5-6-7-8 Calculate the wavelength of the 4 3 transition.
A liquid has a H vaporization of 35.5kJ/mol and a boiling point 0f 122 degrees celcius at 1.00 atm.What is its vapour pressure at 109 degrees celcius.
If a 484 mL sample of gas at 232 °C is allowed to expand (at constant pressure) to a volume of 494 mL, what will be the new temperature (in °C).
When 5.25 g of sodium oxalate is reacted with 5.25 g of calcium chloride, how many grams of sodium chloride and calcium oxalate are formed?
For each of the following reactions, calculate the moles of indicated product produced when 3.00 mol of each reactant is used: a) 4Li(s)+O2(g)-->2Li2O(s) (Li2O). b) Fe2O3(s)+3H2(g)-->2Fe(s)+3H2O(l) (Fe). c)Al2S3(s)+6H2O(l)-->2Al(OH)3(aq)+3H2S(g) ..
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
A given compound has the following solubility properties. At room temperature, it is souble in diethyl ehter but insoluble in both ethanol and water At high temperatures,
What mathematical expresssion will yield the correct volume at 177 degrees celsius and 400mgHg?
a highly radioactive element is determined to contain 0.3256 mol of the element. What is the element?
The combustion of propane illustrated by the following reaction releases 2428 KJ per mole of reaction. A sample of propane is burned at 59 degrees celsius and 746 mm Hg. The process produces 39.7 L of CO2(g). How much heat was released?
Calculate the theoretical yield of C2H5Cl when 123g of C2H6 reacts with 213g of Cl2 , assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
Determine the volume of CO 2 at a temperature twenty two degree Celsius and a pressure of 781 mmHg could be absorbed by 327 grams of Lithium hydroxide LiOH?
How much heat must be absorbed by the six pack to lower its temperature from 25.0C to 5.0C?
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