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Define if the freezing point of mercury is -38.8°C and is the only metal that is liquid at room temperature. Explain what quantity of heat energy, in joules, must be released by mercury if 1.80 mL of mercury is cooled from 23.0°C to -38.8°C also then frozen to a solid? The density of liquid mercury is 13.6 g/cm3 and its specific heat capacity is 0.140 J/g•K and its heat of fusion is 11.4 J/g.
A solution of Na3AsO4 is added dropwise to a solution that is 0.0643 M in Bi3+ and 0.000180 M in Cd2+. What concentration of AsO43- is necessary to begin precipitation
a certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. the volume of the
A solution is made by dissolving 0.632 mol of nonelectrolyte solute in 895 g of benzene. calculate the freezing point and boiling point of the solution
What two properties of ATP make it ideally useful for a form of energy storage in cells? Describe why the hydrolysis of ATP is highly exergonic (give at least two reasons).
a 10.0-l balloon contains helium gas pressure of655mmhg. what is the new pressure of helium gas at each of the
A catalyst lowers the activation energy of a reaction from 215 kJ to 206 kJ. By what factor would you expect the reaction-rate constant to increase at 25*C? Assume that the frequency factors
Much commercial hydrochloric acid is prepared by the reaction of concentrated sulfuric acid with sodium chloride: H2SO4 + 2NaCl → Na2SO4 + 2HCl
To what final volume would 100 mL of 6.0 M NaCl have to be diluted in order to make "physiological saline" (0.54 M NaCl)
Nitrogen and oxygen forms an extensive series of oxides with the general formula NxOy. What is the empirical formula for an oxide that contains 36.85 % by mass nitrogen?
Predict the products of the acid-base reaction between acetic acid and methanamine. Draw the molecules or ions and include charges were needed.
What is the difference between the molecular geometry
How much limestone would be required each year in order to remove sulfur dioxide from a power plant whole daily consumption of coal
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