1. On the following page, construct a graph of n', (moles hydrogen per gram of sample) vs. % Al. Use Equation (12): 100-%A¹(0.0153) (12) H₂ Simply solve this equation for n', using % Al = 0 and % Al = 100, then draw a straight line through these points. % Al "H, = (100) (0.0556) + (1

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1. Water Quality Analysis - A public utility announces the monthly average concentrations of several ionic species in the drinking water. The list is given below (atomic weights are given in parentheses): Calcium (40) = 8.6 mg/L Magnesium (24)=0.77 mg/L Potassium (39) = 0.64 mg/L Sodium (23) = 3.7 mg/L a) What is the ratio of [HCO3]/[CO3²] in this water Chloride (35.5) -3.0 mg/L Fluoride (19)- 0.84 mg/L Sulfate (S-32; O=16)= 3.4 mg/L pH=8.46

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4. Adsorption Isotherm Curve: The low pressure (beginning region) of an adsorption isotherm curve can be approximated with a linear equation of the form: X₁* = K x P₁. The data in the table below provides laboratory measured values of the partial pressure of an adsorbate P¡ versus the mass fraction of adsorbate on the adsorbent X;*. Determine the value of K for the equation above using the data in the table, and also provide the r-squared value of this linear equation fit. Recommend you use the linear regression function in EXCEL to determine these answers. X* (gr adsorbate/gr PCC14 (mm Hg) adsorbent) 0 0 2 0.084 3.5 0.15 5 0.27 7 0.38 10 0.525 Value of K in equation above r-squared value from linear equation fit

Using RCRA procedures, determine if the following are hazardous wastes. State the reason why, or why not it is hazardous. If it is hazardous, state the category number. Assume the industry producing the waste is a RCRA hazardous waste generator. 1. A drum of sulfuric acid at pH 1.2. A drum of waste trichloroethylene (22% by volume).

Consider an aerobic production of acetic acid (P) from ethanol (S) using Acetobacter aceti bacteria. Acetobacter aceti bacteria are added to vigorously-aerate medium containing 16 g/L ethanol. 3 g/L acetic acid is produced after 10 hours . Given the yield coefficient (YS/P) of 1.5, what is the concentration of ethanol after 10 hours ? Report your answer with two decimal places.

QUESTION 6 The equilibrium constant for the reaction is 3.0x104 at 310 K. At equilibrium, the partial pressure of H2 S(g) is 0.370 atm. Calculate the concentration, expressed in units of mM (millimolar) of ammonia gas? Enter your answer in deimal notation and provide 3 significant figures. For example, enter 0.2531 as 0.253

Using the provided ternary phase diagram 1) Determine the EXACT composition of point a2. 2) Determine the maximum amount of (in moles) of pure E that can be added to a 10 mol mixture at point a2 to maintain a two-phase system?

Calculate the vapor phase mole fractions in equilibrium with a liquid hydrocarbon binary mix of 42% carbon tetrachloride and 58% trichloroethylene (use Antoine equation to calculate vapor pressures), for a system at 60°  Also, calculate what is the total system pressure?