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Why are some covalent bonds polar and others aren't? Understand why the covalent bonds of water are polar and those in the hydrogen molecule (H2) are non-polar.
The standard enthalpy of formation of n-octane is -249.95 kJ/mol. Compute the amount of heat liberated when 3.58 g of n-octane is burned completely with excess oxygen to form carbon dioxide and liquid water.
You are going to a birthday party and you want to give the children balloons filled with He gas. How many balloons can you fill to a volume of 2 liters if the internal gas pressure of the tank
Consider the titration of a 24.0 ml sample of 0.120 M HC2H3O2 with 0.105 M NaOH. Determine the initial pH.
What is the solubility of nitrogen in the divers blood at the bottom of the dive? b: If you assume the mass of the divers blood is 5.0 kg, how many moles of nitrogen comes out of the divers blood when he comes to the surface?
If 20.0mL of 0.00200 M Fe(NO3)3 is diluted to 50.0mL, what is the concentration of Fe+3 in the diluted solution?
If 5.00 X 10^3kg each of ammonia, oxygen, and methane are reacted, what mass of HCN and water would be produced, assuming 100% yield?
Suppose that two equal volumes of 0.2 molar NaCl (aq) solutions are separated by a membrane and that the left -hand compartment of the experimental arrangement contains a polyelectrolyte molecule Na6P at a concentration of 50 g/liter
Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 2.84 g of sodium and 4.37 g of chlorine
Important information about Hydroboration reaction, In one experiment you combine 1-hexene which is reacted with H2SO4 with water as the solvent and the compound produced is 2-hexanol
Radioactive nitrogen-13 has a half-life of 10 minutes. After 40 minutes, how much of this isotope would remain in a sample that originally contained 96 mg?
Averge frequency of light emitted a 100 w lightbulb is 5.5x10^14 Hz. How many photons per second does the light bulb emit?
A pound of coffee beans yields 50 cups of coffee (4 cups = 1 qt). How many milliliters of coffee can be obtained from 5 g of coffee beans?
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