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Compute the mass of salt required to bring the freezing point of 200 mL of H2O from 0 degrees C to -5 degrees C.
When a gas has its volume is 2.16 L and has a pressure of 4.68 atm. If the temperature remains constant, determine what will the pressure be when the volume is changed to 1.03 L?
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
calculate the difference in mass that is hold by a 500.0mL flask at a temperature of 0.0°C from that at temperature of 20.0 °C? (you can assume the volume of the sample at 0.0 °C temperature =volume of the sample at 20.0°C)
Calculate how much heat is required to added or removed to convert 100.0 g of steam at 115 0C to liquid water at 65 0C?
Describe in brief the risk connected with solutions of 1M NH 3 , 1M HCl, and 1M NaOH?
What is the osmotic pressure of a homogenous solution at the temperature At 25 o C, as this solution is consisting of 21.0 g urea
Determine the concentration of a solution prepared by diluting 25.0 milliliters of a 12 molar HCl solution with H2O until the final volume is 2.50 x 10² milliliters.
Calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb if we Assume that the light has an average wavelength = 510.0 nm, .
Given that the density of the gas mixture =0.312 g/L at the pressure of 0.2 atm and temperature 500 Kelvin At equilibrium. Determine the value of Kc also express your answer in units of (mol/L)?
When 31.7mL of 0.235M Potassium hydroxide is required to completely neutralize 26.0mL of a HC 2 H 3 O 2 solution, calculate the molarity of the acetic acid solution.
What is the concentration of unknown acid solution? Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
Compute the number of moles - As we know many volatile substances are present in Earth's atmosphere in trace amounts.
determine how many grams of C 12 H 22 O 11 (sucrose) (mm = 342 g/mol) does he need if he uses 375 grams of Water? it is given that the vapor pressure of water =17.5 mm Hg. at 20 degree celsius temperature)
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