You have four gas samples: 1. 1.0 L of H2 at STP 2. 1.0 L of Ar at STP 3.1.0 L of H2 at 27°C and 760 mm Hg 4. 1.0 L of He at 0° c and 900 mm Hg a. Which sample has the largest number of gas particles (atoms or molecules)? b. Which sample contains the smallest number of particles? c. Which sample represents the largest mass?

There's a copper calorimeter container with the mass 0.2 kg and has 0.32 kg of H2O and also 0.036 kg of ice (thermal equilibrium at atm). If we drop 1.5 kg of lead at a temperature of 200 Celsius into calorimeter container, find the final temperature (in Celsius).  Lead=131J/kgK Copper=390J/kg.K H2O = Cw = 4190 J/kg.K & LF = 3.34 x 105 J/kg

You must base your solutions for this problem on vapor pressure correlations in the form of Antoine's Equation In psat 1 mm Hg with the following parameter values: Compound i benzene toluene Ethylbenzene n-propylbenzene n-butylbenzene A₁ 15.9008 16.0137 16.0195 16.0062 16.0793 B₁ A₁ T+ Cu T+C₁ B₁ 2788.51 3096.52 3279.47 3433.84 3633.40 G₁ -52.36 -53.67 -59.95 -66.01 -71.77 T is in Kelvin and Pat is in mm Hg. Note that more data is given than needed to solve the problem. (As is often the case when looking up data...) a) Calculate and plot the Txy phase diagram for vapor-liquid equilibria of binary mixtures of benzene (light) and ethylbenzene (heavy) at atmospheric pressure. Assume validity of Raoult's law. b) Use your results from part a) to plot the xy equilibrium curve for vapor-liquid equilibria of binary mixtures of benzene and ethylbenzene at atmospheric pressure. Remember that the plots are to use mole fraction of the lighter component as their axes. Banzane *

A liquid mixture is made of 15 kg Benzene (MW= 78), 30 kg Toluene (MW=92) and 15 kg Xylene (MW=106) the average molecular weight of this mixture is: Answer: