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A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 204.0 Torr at 45.0 °C. Calculate the normal boiling point of this liquid.
Aluminum is a lightweight metal (density=2.70 g/cm^3) used in aircraft construction, beverage cans, and foils. a) What is its density in kg/m^3? b) How many pounds would an aluminum clock measuring 1.0 m x 2.0 m x 1.5 m weigh
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant.
A system absorbs 192 kj of heat and the surroundings do 110 kj of work on the system. what is the change in internal energy of the system.
A mixture of 4.50 g of He, 12.0 g of Ne, and 29.0 g of Kr is placed in a cylinder at STP. Calculate the partial pressure of each gas.
Given your knowledge of complex ion formation, what do you expect to happen to the solubility of ZnS(s) in a solution containing excess NH3?
Hydrocarbons are often reacted with steam to form H2, as shown for propane: C3H8(g) + 6 H2O(g) 3 CO2(g) + 10 H2(g) Calculate Kp for this reaction at a particular temperature
What is the molar concentration of a solution prepared by dissolving 0.6593 g of NaCl in a 100-mL volumetric flask
Dilute solutions of sodium chloride(NaCl), Sodium sulfate(Na 2 SO 4 ), and Sodium sulfide (Na2S) are available to separate the positive ions from each other., in which order the solutions should be added In order to effect separation?
Natural K consists of 2 stable isotopes 39K(93.10%) and 41K(6.88%) and one radioactive isotope 40K (0.0118%, t1/2 = 1.27x109 years).
calculate the pH OF 100.0 mL of a bufer that is 0.050 M NH4Cl and 0.110 M NH3 before and after the addition of 1.00 mL of 5.75 M HNO3. before=9.59 after=
solving this question helps the student to understand what isnbsp happening in a chemical reaction and to balance the
The two salts NaHPO4 and Na2HPO4 are used to make a buffer. Which one is the acid and which one is the base
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