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This problem states, "when a 9.55 g sample of solid NaOHdissolves in 100.0 g of water in a coffeecup calorimeter, the temprises from 23.6 to 47.4. Calculate change in H. for the solution process:NaOH-----> Na + OH"The solution on cramster uses the q=mc(change of T) equation.For the mass, cramster added both the mass of NaOH and watertogether.Why are the masses of NaOH and H20 added together for the heat equation?
When using dichloromethane as a solvent, which would make a good, yet cost effective, drying agent?
A 499 mL sample of solution contains 32.0 g of CaCl2 Calculate the molar concentration of Cl - in this solution
a balloon is filled to a volume of 7.00 x 102 ml at a temperature of 20.0 oc. the balloon is then cooled at constant
Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid.
a chemist makes an hbr hydrogen bromide sample and observes that this sample occupies capacity of 279 ml at the
What is the concentration of a solution made from 15ml of 2.0M HBrO, 20.0ml of H20, and 9.7g HBrO (mm=97g/mol)
Describe the preparation of 2.00 L of 0.100M pH 9.00 glycine buffer starting with the sodium chloride salt of zwitterionic glycine and 1.00M NaOH.
What is the empirical formula of a compound containing C, H, and O if combustion of a 1.75g sample of the compound yields 2.56g of CO2 and 1.05g of H2O
A 100 mL sample of .20 M HF is titrated with .10 M KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 * 10^-4
What's a net zero molecular dipole moment. and explain specifically why does [IF2]- have a net zero molecular dipole moment
What volume of oxygen, in ml, would be produced at STP (0 degrees C and 1.00atom) by the decomposition of 3.428g of sodium chlorate, according to 2NaClO3(s) -> 2NaCl(s) + 3O2(g)
Van der Waals constants can be found here. P= ? atm Use the ideal gas equation to calculate the pressure under the same conditions. P= ? atm
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