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A piece of iron with a mass of 350g at 300 C is added to 1.00kg of water at 20 C. what is the final temperature of the iron
How do old dispersive infrared (IR) instruments use a grating to separate the infrared source by wavelength before passing through the sample?
a cylinder measuring 3.4 cm wide and 4.0 cm high is filled with gas. The piston is pushed down with a steady force measured to be 275 kpa
The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.
used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure (in atm) could a 271 L balloon be filled?
Calculate the pH of a solution made by adding 24 g of sodium acetate, NaCH3COO, to 26 g of acetic acid, CH3COOH, and dissolving in water to make 200. mL of solution.
An aqueous solution containing 15.6 g of an unknown molecular (nonelectrolyte) compound in 109.5g of water was found to have a freezing point of -1.9 degrees C.
Cabbage water will spoil after a few days. How might you make a cabbage indicator with a longer shelf life? According to your cabbage water, what is the pH of baking soda, crushed aspirin, cleanser, garden lime, sugar and lemon juice?
calculate the equilibrium concentration of Ag+(aq) in a solution that is initially 0.200 M AgNO3 and 0.810 M NH3,
Name two organic compounds that cannot be extracted effectively from an aqueous solution by means of immiscible organic solvent
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide.
At 100 degrees C, the vapor pressure of water, methanol, and ethanol are 760, 2625, and 1694 torr, respectively. Which counpound has the highest normal boiling point.
Question about Thermochemistry, Consider the reaction: H2(g) + Cl2(g) yields 2HCl(g) Change Heat = -184.6
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