1. Calculate the freezing point of a solution that is made from 34.9 g of a nonelectrolyte (ℳ = 172.2979 g/mol) dissolved in 159.9 g of solvent. The solvent freezes at 4.20 °C and its K_fvalue is 3.50 °C/m.

2.The solubility of carbon monoxide gas at 30.4 °C and a carbon monoxide pressure of 449 mmHg is 2.02 × 10⁻³ g/L. What is the Henry's Law constant in mol⋅L⁻¹⋅atm⁻¹?

Report your answer to THREE significant figures.

A wastewater containing 150 mg/l chlorobenzene is treated in a laboratory adsorption unit using a PVC column, 1.0 inch internal diameter, to an effluent concentration of 15 mg/l . Service times, and throughput volumes at specified depths and flowrates associated with a breakthrough concentration of 15.0 mg/l are given in table 1.

table1 : result of adsorption column experiment

Loading rate,gpm/ft²   Bed depth,ft Throughput volume, gal Time, hr

1) is the attainable effluent concentration satisfactory from a regulatory standpoint?

2) determine the Bohart-Adams constant ( K,N₀ and x₀) for each hydraulic loading.

3)base on data derived above design an adsorption column 2.0 ft internal diameter to treat a wastewater flow 5,000 gal/d containing 150 mg/l of CB. The attainable effluent concentration is 15 mg/l and it is desired to operate the column for 90 days(8 hourslday,7 days/week) before reching exhaustion.

4)calculate the yearly carbon requirements in cubic feet.

A concentrated solution of H2SO4 has a molarity of 15.5 M, and a density of 1.760 g/ml

A. How many grams of H2SO4 are in a liter of the solution?

B. What is the total mass of a liter of the solution?

C. How many grams of water are in a liter of the solution?

D. What is the mole fraction of the H2SO4 in this mix?

E. What is the molality of the H2SO4?

A 0.20 M solution of the weak acid HA is 5.5 % ionized HA + H2O --> H3O+ + A-

a.Calculate the [H3O+]

b.Calculate the [A- ]

c.Calculate the [HA] at equilibrium

d.Calculate the Ka for the acid

e.Calculate the pH of the solution

An IR spectra can be divided into three major regions for interpretation. Provide a range for these three regions and what functional groups and associated peaks value you would expect to see in each region.

How do I draw the molecular geometry (Including polarity) for NaOH, CaCO3, Ca(OH)2 and Ba(OH)2?

Calculate the volume of nitrogen dioxide produced at 746.0 torr and 20.8°C by the reaction of 6.05 cm³ copper (density = 8.95 g/cm³) with 212.4 mL of concentrated nitric acid if the acid has a density of 1.42 g/cm³ and contains 68.0% HNO₃ by mass).
Cu(s) + 4HNO₃(aq) → Cu(NO₃)₂(aq) + 2NO₂(g) + 2H₂O(l)

3.11 g of toluene (C7H8) is burned in a bomb calorimeter. The following reaction occurs. C7H8(l) + 9 O2(g) → 7 CO2(g) + 4 H2O(l) The temperature of the calorimeter changes from 24.2°C to 40.1°C. Given that the heat capacity of the calorimeter is 8.32 kJ/°C, find the amount of heat generated per mole of toluene.

___ kJ/mol toluene

a) Estimate the decay heat load from a 3000 MWt reactor at one day, one week, one month, and one year after shutdown from a 2-year run. b) Estimate the rate of heat up in a reactor core that has lost all of its coolant. Consider the decay heat loads found above. Assume the heat capacitance of the dry reactor core is 16,500 Btu/°F.

Compound A and Compound B are binary compounds containing only elements X and Y. Compound A contains 1.000 g of X for every 1.914 g of Y. Which mass ratio for Compound B below follows the law of multiple proportions with Compound A?

1.301 g X: 3.369 g Y

0.6966 g X: 2.003 g Y

1.908 g X: 2.739 g Y

2.710 g X: 5.545 g Y

0.4106 g X: 2.699 g Y

The force constants for F2 and I2 are 470. and 172 Nm−1, respectively. The atomic masses in amu are as follows: 19 F - 18.9984, 127 I - 126.9045.

1) Calculate the ratio of the vibrational state populations n1/n0 for F2 at 310 K

2) Calculate the ratio of the vibrational state populations n1/n0 for F2 at 900 K

3) Calculate the ratio of the vibrational state populations n2/n0 for F2 at 310 K .

4) Calculate the ratio of the vibrational state populations n2/n0 for F2 at 900 K .

5) Calculate the ratio of the vibrational state populations n1/n0 for I2 at 310 K

6) Calculate the ratio of the vibrational state populations n1/n0 for I2 at 900 K

7) Calculate the ratio of the vibrational state populations n2/n0 for I2 at 310 K .

8) Calculate the ratio of the vibrational state populations n2/n0 for I2 at 900 K .

If you add 35.6mL of 5.20M Hcl to 35.6mL of 7.40M NaOH, the solution that you generate is what percent NaCl? (Keep in mind the following... you must balance the equation to ge the answer and you must also consider what is the final volume of this solution?)(molar mass of NaCl is 58.44g/mol)

A student placed 14.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100mL mark on the flask was reached. The flask was then shaken until the solution was uniform. A 40mL sample of this glucose solution was diluted to 0.500L. How many grams of glucose are in 100mL of the final solution?

Compare samples of helium and neon gases at 25°C.

(a) Which gas has the highest average molecular speed? Explain your answer.

(b) Which gas has the highest average molecular kinetic energy? Explain your answer.