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The specific heat of mercury metal is 0.138J/gK. How much heat, in joules, is required to heat a 71.5 gram sample of mercury from -6oC to 54.4oC? Enter your answer in scientific notation with no units.
A solution of a protein contains 0.382 grams of the material in 1.00 L of solution. At a temperature of 25°C,this solution has an osmotic pressure of 1.07 torr. Calculate the molar mass of the protein.
HCL is a significant component of gastric juice. what is the concentration of chloride ion in gastric juice at pH=1.27?
compute the amount of heat needed to completely sublime 43.0 grams of solid dry ice at its sublimation temperature. the
the reaction a->b=c is found to be a zero order. If it takes 4.3 x 10^2 secounds for an initial conventration of A to go from .50 M to .25 M, what is the rate constant for the reaction
A mixture of the compounds magnesium chloride and sodium oxide contains 2.65 g of magnesium and is 82.5 % by mass magnesium chloride. The compound magnesium chloride is 25.5 % by mass magnesium. The compound sodium oxide is 74.2 % by mass sodium. ..
Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more
N2O2 draw valence bond drawings for the resonance forms-clearly labeling the sigma and pi bonds and hybrid orbitals.
What is the pH of a solution formed after titrating 25 mL of 0.150 M acetic acid with 15.0 mL of 0.150 M sodium hydroxide? Ka(acetic acid)=1.76x10-5
Water contained in a piston-cylinder assembly undergoes two process in series from an initial state where the pressure is 10 bar and the temperature is 40°C. at first, the water is cooled as it is compressed at a constant volume to 150°C.
suppose 2.8 moles of methane are allowed to react with 5 moles of oxygen? what is the limiting reagent?How many moles of CO2 can be made from this mixture? How many grams of CO2 would produce?
Given non pourous material A having a density of 2.35 and non pourous material B having a density of 2.41 what is the theoretical density of material A+B when there is 75 weight % of material A and 25 weight % of material B when combined
An empty volumetric flask, weighing 60.42 grams, weighed 309.60 grams when filled with water. After emptying the water and drying the flask
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