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Alloxanic acid(C4H4N2O5,6.40g,),sodium alloxanate(5.46g) were dissolved in 250.0mL of water. Calculate moles of alloxanic acid dissolved.
A 1.00 L flask at 298 K contains a mixture of Kr and N2 with a total pressure of 0.940 atm. If the mole fraction of Kr is 0.455, what is the mass fraction of Kr
you have a 30.0 L cylinder of helium at a pressure of 132 atm and a temperature of 24 degrees Celsius. the He is used to fill balloons to a volume of 3.00 L at 1.07 atm and 29 degrees Celsius.
Write the balanced molecular, total ionic and net equations and names of the ionic compounds expected from the double replacement reaction of potassium phosphate and molybdenum(VI) chloride.
What is the freezing point of water under a pressure of MPa? Assume that the density of ice is 0.915 g.cm^-3 and that of liquid water is 0.998 g cm^-3 at this pressure
Consider the following initial rate data (at 295 K) for the decomposition of a substrate (substrate 1) which decomposes to product 1 and product 2
What is the concentration of sodium in a river water sample that reads 115.0? the correct answer is: 17.9 ppm. how to obtain this answer since the plot is not linear.
A modern sample gives 920 disintergrations/h. Estimate the age of the Scrolls from these data
A 5% glucose solution has a specific gravity of 1.02. What is the mass of 500 ml of the glucose solution
How high will a hot air balloon rise if the temperature inside is maintained at 330 K? Assume that the ambient temperature is 300 K. Assume that the pressure inside and outside are the same, but the density inside is reduced by heating
If a student weighed out a 500. mg tablet of vitamin C, measured to the nearest 0.001g and recovered 0.254g of ascorbic acid. What is the percent mass of vitamin C in the tablet
If 69.5 kJ of heat is applied to a 1039 g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
One of the advantages offered by a synthetic detergent is that it won't form "soap scum" with hard water. Show the chemical reaction that a soap (use RCO2-) undergoes with calcium or magnesium ions
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