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How many grams of malonic acid would be needed to make 50.0 milliliters (0.0500 L) of 0.200 M malonic acid? The formula for maganese sulfate monohydrate is MnSO4 x H2O. What is its molar mass?
A graduated cylinder contains 138 of water. A 19.0 piece of iron (density = 7.86 ) and a 25.0 piece of lead are added. What is the new water level in the cylinder?
What is being asked? Using the values of the effective molar absorptivities you determined from your slopes and the values of the absorption you obtained for the mixture at the spectral maxima of 43
If the oven uses microwave radiation of wavelength 12.2 cm, how many photons of this radiation are required to heat 1.28 g of water 1.00°C, assuming that all the photons are absorbed?
How many kilojoules are required to raise the temperature of a 150. g sample of silver from 25 degree celcius to 135 degree celcius? silver has a specific heat of 0.235J/g degree celcius.
A 26.0-g sample of ice at -11.0°C is mixed with 123.0 g of water at 90.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H
Treatment of 4-chloro-1-butanol with one equivalent of lithium diisopropylamide (LDA) as a base leads to rapid formation of a compound with the molecular formula C4H8O.
The other uses an incorrect value (16) and determines the average molecular weight as 32.8. This is the only error in the calculation. What is the percent of oxygen in the mixture expressed as mole
How does direct current break apart water molecule? Does the DC current fill the outer shell full of electrons making a weaker attraction so hydrogen seperates from oxygen?
A sample of nitrogen gas is contained in a pistol with a freely moving cylinder. At 0.0 C , the volume of the gas is 375 ml. To what temperature must the gas be heated to occupy a volume of 500.0ml
An empty volumetric flask, weighing 60.42 grams, weighed 309.60 grams when filled with water. After emptying the water and drying the flask, it was filled with ethylene glycol. It now weighed 338.72
A total of 2.00 of a compound is allowed to react with water in a foam coffee cup and the reaction produces 193 of solution. The reaction caused the temperature of the solution to rise from 21.0 to
What fraction of A remains in the aqueous phase (a) if one extraction with 500 mL is performed and (b) if five extractions with 100 mL are performed?
A solution of sulphide Ct=10-6M is blended into a 0.4M sodium chloride solution in a closed container. Plot a pC-pH diagram for the system and include activity coefficients in the construction.
How many grams of sodium lactate should be added to 1.00 of 0.150 lactic acid to form a buffer solution with = 4.00? Assume that no volume change occurs when the sodium lactate is added.
What is the spectator ion for the chemical formula Cl2 + NaBr=Br2 + NaCl
A 7.5- sample of hydrogen gas completely reacts with 60.0 of oxygen gas to form 67.5 of water. Is the following data set on chemical changes consistent with the law of conservation of mass?
What is the maximum volume of nitrogen measured at 1.00 atm and 37°C that could dissolve in the diver's blood plasma at a depth of 93 m, where the pressure is 10.0 atm?
Calculate the mass of oxygen dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for ox
The product of one-eleventh and the volume of the water. If 979 cubic centimeters of water is to be frozen, what will be the volume of the ice that will be formed?
A glucose solution contains 56.0 {rm g} of glucose ({rm{C}}_6 {rm{H}}_{12} {rm{O}}_6) in 440 {rm g} of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00
At 700.°C, the total pressure of the system is found to be 3.45 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.
Assume the Pacific Ocean has a surface area of 1.7 x 108 km2 and an average depth of 3900 m. Calculate the volume of water in the ocean in liters