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A flask is first evacuated so that it contains no gas at all. Then, 2.2 g of CO2 is introduced into the flask. On warming to 22 °C, the gas exerts a pressure of 318 mm Hg. What is the volume of the flask?
A beaker contains 7.85 g of Cu2O. A second beaker contains some FeCl3. If the two beakers contain the same numbers of formula units, what is the mass of the FeCl3?
You want to make one mole of glycerine (C3H6O3). How many moles of each element must you use?
Carbon (C): ________
Hydrogen (H): ________
Oxygen (O): __________
Carbon (C): ________
Hydrogen (H): ________
Oxygen (O): __________
in the leclanche cell why should the complex ion crystallizes into salt
Gaming computer manufacturers are marketing a one terabyte hard drive. How many megabytes are in one terabyte (approximately)
A lizard is running across the road at a speed of 2.8 m/s. To be safely on the other side of the road, the lizard needs to run 3.0 meters. How long will it take for the lizard to run 3.0 meters? Round to a tenth of a second.
A 3.5
3.5 g sample of sodium hydrogen carbonate is added to a solution of acetic acid weighing 10.5
10.5 g. The two substances react, releasing carbon dioxide gas to the atmosphere. After the reaction, the contents of the reaction vessel weigh 12.4
12.4 g. What is the mass of carbon dioxide released during the reaction?
How to prepare 2M FeSO4 Solution
How to prepare 2M FeSO4 Solution
1. You have a 0.02 M stock solution of Tris base. How would you make 500 ml of 0.3 mM Tris base ?
