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The diameter of a neutral helium atom is about 1.0 102 pm. Suppose that we could line up helium atoms side by side in contact with one another. Approximately how many helium atoms would it take to make the distance from end to end 1 cm?
Imagine that you have a 6.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
A particular electrons position can be measured to a precision of 0.058nm, what is the minimum uncertainty in the electron' velocity? Me = 9.109 x 10E-31 kg, c= 3.00 x 10E8 m/s , h = 6.63 x 10E-34 js
Calculate the percentages of dissociated and undissociated forms present in the following solutions:
A gaseous mixture of rm O_2 and rm N_2 contains 36.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg?
Calculate the mass of CuS produced and the concentration of H+ ion produced by bubbling H2S into 1.00 L of 0.10 M CuCl2 (aq) solution. The net ionic equation is:
what is the percentage ionization of the benzoic acid in the resulting solution. Ka(benz acid)=6.5 * 10^-5
If the most common monosaccharides have the formula C6H12O6, why do the resulting disaccharides have the formula C12H22O11, rather than C12H24O12
If a triacylglycerol in peanut oil that contains one palmitic acid, one oleic acid, and one linoleic acid is completely hydrogenated, what is the product
multiply this new K value for reaction 3 by the k value for reaction 2 to "add" the k values together in order to determine the K value of reaction 1.. From the K value of reaction 1, i converted it to E standard. would this be the correct way to ..
if 100% of the NaCl molecules dissociated, the van't Hoff factor i=2 calculate the experimental van't Hoff factor of NaCl from your data. I dissolved 30 g of salt into 100ml of water
question if the heat change for the decomposition of 25.0 g hydrogen peroxide is -72.2 kj what is the enthalpy of
a 49g piece of ice at 0 degrees c is added to a sample of water at 9 degrees c. all of the ice melts and the
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