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Describe and explain how each of the following experimental errors or variations might affect your results. a) you failed to dry the reaction flask after washing it with water. b) you forgot to add the sulfuric acid. c) you used twice the amount of acetic specified in the procedure. d) you left out the sodium bicarbonate wahing step. e) your thermometer bulb was 1 cm higher that it should have been.
Which reaction below could not be used to create C-C bonds?
A 30 g sample of water at 280 K is mixed with 50 g of water at 330 K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
If the ethane is burning at the rate of 0.20 mol/L.s, at what rate are CO2, and H2O being produced?
Calculate the molarity of a solution of glycerol made by dissolving 58.000 mL glycerol at 15 degrees Celcius in enough water to make 390.00 mL of solution.
The hypothetical element, Bc, has three stable isotopes. The isotopic abundances and masses of the three isotopes are
How many grams of IKI (iodine-potassium iodide; molar mass = 166.0 g/mol) would it take to obtain a 100.0 mL solution of 0.300 M IKI? How many grams of IKI would it take
At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure
An empty Erlenmeyer flask weighs 215.7 g. When filled with water (d = 1.00 g/cm3), the flask and its contents weigh 515.4 g.
Explain why the dichlorofluoresceinate anion is adsorbed onto the surface of the AgCl precipitate
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
An aerosol spray can with a volume of 350. mL contains 2.29 g of propane gas (C3H8) as a propellant. (a) If the can is at 25°C, what is the pressure in the can? (b) What volume would the propane occupy at STP?
if carbon atoms started out neutral but ended up partially charged. did they gain electrons. lose them. is the carbon being reduced or oxidized?
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