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The van't Hoff factor for KCl is = 1.85. What is the boiling point of a 0.90 solution of KCl in water? For water, = 0.51.
Why is it important to the place the thermometer bulb at in the lower part of the Hickman still head. What will happen if you place it either a)too low or b)too high in the condenser
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
how many liters of NO gas can be produced at STP from 80.0 mL of a 4.00 M HNO3 solution and 10.0 g of Cu? 3Cu(s) + 8HNO3(aq) > 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g)
"disappeared" from a rock face that is adjacent to a lake (original pH=6.7) with dimensions 100 m x 40 m x 10 m. You think that the "disappearance" is due to leaching of the pyrite into the lake. To prove your point, what would the new pH of the l..
Sodium carbonate was used to precipitate silver from a solution. 6.00 grams of silver carbonate were recovered from 1.500L of solution.
A reaction mixture initially contains 1.6 L of A and 1.8 L of B. Assuming that the volume and temperature remain constant, what is the percent change in pressure if the reaction goes to completion?
What concentration of naphthalene in grams per liter would be needed to give an absorbance of 1.0 at 220nm
What is the redox number for nitrogen in a molecule of nitrogen dioxide
Determine the value of the equilibrium constant, K_goal, for the reaction N2(g) + O2(g) + H2(g) 1/2N2H4(g) + NO2(g) ,K goal=? by making use of the following information
For complex molecules, such as those found in organic chemistry and those involving proteins, it is often the case that a) possible reactions are dictated by how the molecule was formed
What is the hydronium ion concentration of a 0.500 M acetic acid solution with Ka = 1.8 x 10-5? The equation for the dissociation of acetic acid is: CH3CO2H(aq) + H2O(l) H3O+(aq) + CH3CO2-(aq)
The [OH-] of a solution is 3.6 x 10-4 M. What is the [H3O+]? Is the solution acidic, basic, or neutral. Write the correct molecular formula for the structure :Br--CH2--CH--OCH3--CH3.
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