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Compute the Spectral radiance for a blackbody at 2500 K for the wavelength range 4500 angstroms to 4500 + 10 angstroms
a gas is enclosed in a cylinder fitted with a piston. the volume of the gas is 2.00 l at 1.00 atm pressure. the piston
Three 5 L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 273 K. Flask A contains H2, flask B contains He, and flask C contains CH4. Rank the flask contents in terms of the following properties.
Suppose helium nuclei has exactly the same mass as adding two single protons and neutrons, the Sun's luminosity would be
The salts of calcium sulfate, magnesium carbonate, lead (II) bromide, calcium chloride and silver nitrate are all added to a beaker. Pure water is added and the mixture is stirred well as well as allowed to settle. Four solids are now present in ..
Calculate the amount of heat required to completely sublime 18.0g of solid dry ice (CO2 ) at its sublimation temperature
A test solution is made basic and drops of 0.1 M Ca(NO3)2 are added but no precipitate forms. What will occur next. Is this an acidic solution. Does a precipitate form. Explain.
Solve for the total moles, then the total pressure of the mixture using the Ideal Gas Law. Next find the mole fraction of Argon and solve for partial pressure of Argon.
what volume of O2(g), measured at 17.7 degrees C and 0.978 atm reacts with 15.1 g C4H10 to produce CO2(g) and H2)(l)? Hint: you must write a balanced equation for the reaction.
Use the molar volume of a gas at STP to determine the volume (in L) occupied by 10.5 g of neon at STP.
110 micro mol of 206^Pb. Assuming that all the 206^Pb comes from decay of the 238^U, estimate the rocks age (in yr).
the solubility of adipic acid in water is 1.5 g per 100 ml at 15?c and 0.6 g per 100 ml in ether at the same
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s). If 12.5 g of iron(III) oxide (rust) are produced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
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