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Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 J/(K·mol) for Na(l) at 500 K.
unused lead nitrate to the container marked"sodium nitrate". What could the student do to get all the led ions out from the sodium nitrate?
an Erienmeyer flask is closed by a stopper connected to a glass tube. the glass tube is sealed by a drop of mercury. if we move the whole appareatus in the diagram from a room with a temp. of of 26 degrees celcius to an outdoor yard with a temp of..
As a separation and detection method, would TLC or paper chromatography yield better results in the analysis of each of the following pairs of compounds?
Draw the major organic product from reaction of 1-butyne with NaNH2, then CH3Br. If no reaction occurs, write ethane, CH3CH3.
25.0 mL of a calcium chloride solution is added to an excess of aqueous silver nitrate. The resulting precipitate has a mass of 1.25 grams. If the percent yield of this reaction is known to be 85%, calculate the concentration in molarity of the or..
Consider the brilliant blue spectrum (blue 1) shown here. What is the wavelength of maxmal absorbance in nm? (Do not include units in your answer: number only)
A 499 mL sample of solution contains 32.0 g of CaCl2 Calculate the molar concentration of Cl - in this solution
which obeys the Van der Waal's equation. Investigate graphically using appropriate software (like Maple) the behavior of Z above and below the Boyle temperature. Obtain an expression for the Boyle temperature for a Van der Waal's gas.
A sample of krypton gas at a pressure of 0.621 atm and a temperature of 20.7oC, occupies a volume of 17.2 liters. If the gas is compressed at constant temperature to a volume of 5.62 liters, the pressure of the gas sample will be
A 1.80 M solution of 56 ml is diluted to a volume of 218 milliliters a portion of that solution of 109 milliliters is diluted using 149 milliliters of H2O. determine the final concentration of this solution
Why do use slightly different amounts of acids (HCL and NaHSO4) from the amounts of base (NaOH). In what order should you mix the acid and base
What final temp. would be required to increase the pressure to 1 atm, the volume being held constant?
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