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A piece of metal weighing 5.10g at a temperature of 48.6 degree Celsius was placed in a calorimeter into a 20.0o mL of water at 22.1 degree celsius, and the final equilibrium temperature was found to be 29.9 degree celsius. What is the specific heat of the metal?
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.60g of sodium carbonate is mixed with one containing 5.14 of silver nitrate.
A rigid cylinder with a movable piston contains a 2.0-liter sample of neon gas at STP. What is the volume of this sample when its temperature is increased to 30.°C while its pressure is decreased to 90. kilopascals.
In the laboratory you are asked to make a 0.648 m cobalt (II) bromide solution using 350 grams of water. How many grams of cobalt (II)
80.0 of is initially at room temperature 22. a chilled steel rod at 2 is placed in the water. if the final temperature
What was the calculated PH value obtained for the reaction NH3 + HCl -› NH4Cl using the thermodynamic data NaOH (aq) + HCl (aq)--> H2O(l) +NaCl (aq) NaOH (aq) + NH4Cl(aq)---> NH3 + NaCl + H2O(l) NH4Cl 2M 20ml NH4OH 2M 10ml HCL 2M 20ml NaOH 2M 20ml
It is important that the flask used for molar mass determination is completly dry before adding volatile liquid unknown to it.why? what would happen to any droplets of wash-water remaining in the flask when the temperature of the flask is raised t..
the calorimeter itself absorbs a negligible amount of heat, calculate combustion eneergies (change of energies) for benzene in both kj/g and kj/mol.
Benkart's Tie Store has fixed costs of $180,000. Tires sell for $75 each and have a unit variable cost of $30. What is Benkart's break-even point in units?
identify the unknown gas.what is the mass of the solid nh4cl formed when 73.0 g of nh3 are mixed with an equal mass of
A competitive inhibitor of carbonic anhydrase has a K(i) of 0.04 M. What is the V(max) for this reaction of 0.6 mg/mL in the presence of 4.20 mM inhibitor.
A sample of oxygen gas occupies a volume of 555.0 mL at 822 torr and -45?. Calculate the temperature in ? if the gas has a volume of 2.53 L at 491mmHg.
Calculate the heat lost by the hot water, Calculate the heat gained by the cold water, Calculate the calorimeter constant, using the delta T of the cold water.
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