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A known compound has a melting point range of 134-137 degrees C. You record a melting point point range of 125-126 degrees C for a sample. IS this sample a pure compound?
Compute the enthalpy change, for this reaction per mole of solution and A calorimeter has water of 22.0 grams at the temperature of fifteen degree celsisu
What is the vapor pressure of pentane in this solution at 25°C? The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
a 3.00-g sample of a compound having the formula ch2o n is dissolved in water to form 100.0 ml of solution. the
Given a 1.00 g sample of each of the following metals at 50 degrees C, which would raise 100 g of water at 25 degrees C to the highest temperature?
What mass of carbon dioxide is produced from the complete combustion of 6.20×10?3 of methane: CH4+ 202 Yields CO2+ 2H2O
Imagine that 1.00 mol H2O(l) is placed in a piston with a constant external pressure Pext = 1 bar. The piston is then placed in a large thermal bath at a temperature of 270 K.
What is the freezing point of a 0.19 m Solution of glucose C6H12O6 in water. (Kf for water is 1.858 degrees C/m)
1) Every element on the Periodic Table tends to form a different color when in a compound when compared to when it is alone as an element. For the precipitates listed above, type the color that each element tends to be when it forms a precipitate.
Tums, a drugstore remedy for acid indigestion, contains CaCO3. Write an equation for the reaction of Tums with gastric juice (HCl)
question a 1.71 mol sample of ar gas is confined in a 41.9 liter container at 25.7 c. if the volume of the gas sample
The density of a 0.0122 M KMnO4 is 1.037 g/mL. Suppose 26.35 g of 0.0122 M KMnO4 are required to titrate 1.072 g of a household H2O2 solution. Except for answers to (a) and (e), use scientific notation. Do not include units, just enter numerical v..
A specific heat of gold is .129J/g deg. Celsius. What is the molar heat capacity of gold
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