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To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 4.00mol of gas D measured at 251 ?C in a 1.75-L container assuming real behavior?
What length of time (minutes) would be required to plate 12.25 g of nickel from a NiCl2(aq) solution?
lightbulb is visible light and that the average wavelength og the light is 550 nm, how many photons are emitted by the lightbuld each second?
The heat of vaporization of water is 40.66 kJ/mol. Assuming sweat is 100% water, how much heat is removed from your body through the evaporation of 3.13 g of sweat?
A sample of vapor occupies a volume of 125 mL at 100 degrees C and 748 torr. What is the volume of the same sample under STP conditions?
In an aqueous solution that contains 285 mg of trichloroacetic acid (HA), Cl3CCOOH (163.4 g/mol) in 10.0 ml. Calculate: 1) Analytical molar concentrations of HA species
How many phases and components are present. (b) What is the variance (the number of degrees of freedom) of the system? Identify the independent variables.
Gold has a density of 19.3 g/cm3. How many pounds does a gold sphere weigh if it has a diameter of 5.20 inches?
A 2.154 g sample of HgO produces 125 mL of oxygen gas. The gas is collected over water at 24 C and an atmospheric pressure of 763 torr.
What would you use to prepare a buffer system with a pH of around 4.2. What would you use to make a buffer with a pH of around 9.2? Describe the process you used to choose the correct buffer for each pH.
What is the molecular geometry around a central atom that is sp3 hybridized and has one lone electron-pair? a.bent, b. linear, c.trigonal-planar
How much salicylic acid is required to produce 1.1 x 102 kg of aspirin assuming that all of the salicylic acid is converted to aspirin
If the same amount of sebacoyl chloride, 1,6-hexanediamine and sodium hydroxide were combined , but the solvent was used to afford a homogenous reaction mixture
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