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What electron transition in a hydrogen atom, ending in the orbit 4, will produce light of wavelength 1640 nm?
Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.695-g sample of Mg metal is added to 125.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. What mass of H2 is formed
How many kilojoules a) are required to raise the temperature of 33.4 g CH3CH2OH(l) from 19.6 to 49.8 C b) must be removed from a 325 g sample of CH3(CH2)6CH3(l) to lower the samples temperature from 82.4 to 31.6
How much heat is required to warm 12.0 g of ice, initially at -11.0 C, to steam at 113.0 C?
1. calculate the four values of ph poh h and oh- for a 0.100 m of hcl.2. calculate the four values of ph poh h and oh-
how to calculate the enthalpy of air at -80 degree centigrade temp and -161 degree centigrade at 37 barg and 4 barg
For which of the following substances will the molar solubility in water be the same as that in an HCl or NH3 solution
Calculate the final volume of the reaction mixture: B. Calculate the number of moles of each reagent (acetone, iodine, and acid) in the resulting reaction mixture: acetone: iodine: acid:
The density of a sample of an unknown solid is 16.9 g/cm3. Convert this density to to units of lb/ft3.
ultisols are an important soil order in this group of soils. describe the typical profile of this soil order paying
The osmotic pressure of a aqueous solution of a given polymer with mass concentration 0.300 g/mL is 10.0 torr at 298 K. Estimate the molar mass of the polymer.
starting with solid sodium chloride, how would you make one liter of 2.000 ppm sodium chloride solution
a balloon is filled to a volume of 7.00 times 10^2 mL at a temperature of 20.0 degrees celcius. the balloon is then cooled at constant pressure to a temperature of 1.00 times 10^2 K. what is the final volume of the balloon?
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