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An object has a mass of 6.85g. when placed in a graduated cylinder containing 25.0 ml of water, the water level increased to 28.8 ml. Calculate the density of the object
When 4.21 g of a nonelectrolyte solute is dissolved in 165 mL of water at 26 °C, the resulting solution exerts an osmotic pressure of 909 torr
Calculate P,V and T for initial and final states of each process and produce a plot of the two processes on a P,V diagram. Without resorting to equations, explain why the result for part (b) is greater than or less than the result for part (a).
You need to understand the factors that determine whether a reaction is under thermodynamic control or kinetic control and be able to predict the corresponding product.
A molecule of chlorine dioxide (ClO2) at 25oC has a velocity of 306 m/s. What is the kinetic energy in joules of the molecule at this temperature?
Raidum-226 (atomic mass=226.025402 amu) decays to radon-224 (a radioactive gas) with a half-life of 1.6 x 10^3 year. What volume of radon gas a (25 degrees C and 1.0 atm) is produced by 1.0 g of radium in 5.0 days
What is the osmotic pressure of a solution made from dissolving 95.0 g of glucose, C_6H_{12}O_6, in 725 mL of water at 39.0 degrees C?
Write the ionic equation for the reactions. Write the net ionic equations for the reactions, A.) LA2(CO3)3 (s)+HCL (aq)= LaCl3 (aq) + CO2 (g) + H20
The electron in a hydrogen atom occupies a 6p orbital. What is the longest wavelength of light that can be emitted by this atom? Give answer in nanometres, nm
What is the Zn2+: Cu2+ concentration ratio in the following cell 25 degrees if the measured cell potential
what volume of ethylene glycol, a nonelectrolyte, must be added to 15.0 Liters of water to produce an antifreeze solution with a freezing point of - 30 degrees celcius? what is the boiling point of the solution?
For each of the following salt solutions, indicate whether the solution will be acidic, basic or neutral. Then using data given below, calculate [OH-] or [H3O+] and pH for each solution.
There is an inherent flaw in the drying procedure for the gravimetric determination that causes the measured mass of BaSO4 to be erroneously high
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