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What is the definition of a "mole" of a substance? What is meant by the molar mass of a substance? Why is the mole a convenient quantity to use in chemistry?
The density of acetic acid vapor at the narmal boiling point, 118.5 degrees C, is given as 3.15 g/L (normal boiling point is the boiling point at P =1 atm). a) calculate the fraction of the vapor that is the monomer and the fraction that is the dim..
Predict whether the following reactions will occur or not. For those that do occur complete and balance the equation. Write N.R. for those that do not occur. Include all subscripts (e.g., (S), (aq), etc.)
Question- Calculate the pH of the cathode compartment solution if the cell emf at 298 K is measured to be 0.650V when [Zn2+]= 0.26M and PH2= 0.96atm.
(a) Draw a Lewis structure. (b) Predict the geometry about the carbon atom. (c) Determine the hybridization of each type of carbon atom.
calculate the molecular weight of citric acid if 25.0 ml of a 0.750m sodium hydroxide solution were required to
Write a reaction for the formation of a peptide bond between alanine and serine. React the amino group of alanine with carboxyl group of serine. Remember that there are 2 products in this reaction.
At what temperature is the molar volume of an ideal gas equal to 22.4L, if the pressure of the gas is 2.5 atm
In non-ionic compound, the two primary sources of intermolecular forces are permanent dipoles and temporary dipoles. Explain what causes each of these types of dipoles to form.
Calculate the molality of total ions in an acqeous solution prepared by dissolving 0.400 moles of magnesium chloride in 850.0 g of water?
E was found to be -2,000.00 kJ/mol of an unknown liquid hydrocarbon at 298 K. In another experiment it was determined that for each mole of hydrocarbon, 5 moles of oxygen gas are consumed
A solution of CaCl2 has a density of 1.071 g/ml and a standard deviation of 0.008 g/ml. What is the concentration
When a sample of helium gas is charged with electricity, what causes the bright-line spectrum that is observed
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