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A sample of gas confined in a 2.0L container at 930 Torr and 25oC was heated to 45oC. What was the final pressure?
What property of the atom did Moseley associate with the wavelength of X-rays emitted from an element in his experiments?
If 28mL of 7.0M Sulphuric acid(H2SO4) was spilled, then determine what is the minimum mass of NaHCO3 (Sodium bicarbonate or sodium hydrogen carbonate)
Compute the ΔH for this reaction and express your answer in kilojoules if the given . Bond Energies (kJ/mol) are N-Cl 201 , Cl-Cl 243 , N-H 389 ,H-Cl 431
What is the kinetic energy of this soccer baal? Mass of soccer ball is= 0.38 kg and fits this description out of these four given cations ?
The _______ of a titration occurs when the indicator changes color.
What mass of Sucrose(C12H22O11) should be combined with 456g of water to make a solution with an osmotic pressure of 8.05atm at 280K
What is the composition in mole fractions of a solution of benzene and toluene that has a vapor pressure of 35 torr at 20 °C? Assume the mixture forms an ideal solution.
A 12.0-g sample of ice at -19.0°C is mixed with 115.0 g of water at 72.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
you dissolve 15.0g of sucrose C12H22O11 in a cup of water (225g) what is the freezing point of solution (kf of water is -1.86).
A solution containing 100g of unknown liquid and 900g water has a freezing point of -3.33C. Given Kf=1.86C/m for water, determine the molecular weight of the unknown liquid and express your answer in g/mol.
Important information about Molarity, You have 20 ml of 10% Bromophenol Blue (BPB). Using a 10% stock, how would you prepare 5 ml of a 0.2 % stock?
Determine how many moles of carbon dioxide should be added to the system to bring the equilibrium carbon monoxide concentration to 0.743 mol/L
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