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Question- Describe the differences in magnitude of the attractive forces in solids, liquids and gases. Describe how these affect the differing properties of these three states.
I have read my textbook in addition I at a halt don't understand thus please provide me a very strong and simple answer?
Find the mass of urea (CH4N2O) needed to prepare 50.8 g of a solution in water in which the mole fraction of urea is 7.55×10?2.
A solution of cough syrup contains 5.00\% active ingredient by volume. If the total volume of the bottle is 34.0mL , how many milliliters of active ingredient are in the bottle? Express your answer with the appropriate units.
Calculate the mass in grams of calcium bromide the chemist has added to the flask. Round your answer to 3 significant digits.
How much heat is required to warm 1.20 kg of sand from 26.0 0C to 100.0 0C?
Luminol is a reagent used to detect blood at crime scenes. A technician prepares a stock solution by adding 6.0 g of luminol (molar mass=177 g/mol) to 50.0 mL of H2O.
Predict the wavelength (in nm) of the lowest energy electronic transition in the dye polymethine ion. Assume all C-C and C-N bond lengths are the same and are 1.4 A (0.14 nm) and that N+1 contributes 1 π-electron and N contributes 2 π-electrons.
If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure Y--X(with 2 lone pairs)--Y can be abbreviated as XY2Z2
avogadros number is big. if you had 6.02 x 1023 dollars and could spend it at 1 billion 109 per second for your entire
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container. what is the total pressure in the container at equilibrium?
Calculate the pH of the solution resulting from the addition of 20 mL of 0.10 M NaOH to 100 mL of 0.10 M HCN (Ka = 4.9x10^(-10))
Considering that Xenon has eight valence electrons, how can something like XeF4 exist? Explain your answer by illustrating what occurs.
Question- Calculate the pH for each of the following cases in the titration of 25.0 ml of 0.190 M pyridine, C5H5N(aq) with 0.190 M HBr:
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