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Using appendix C, calculate the delta S values for the following reactions. In each case explain the sign of delta S.
a.) N2H4(g) + H2(g) ---> 2NH3(g)
b.) 2Al(s) + 3Cl2(g) ----> 2AlCl3(s)
c.) Mg(OH)2(s) + 2HCl(g) ---> MgCl2(s) + 2H2O(l)
d.) 2CH4(g) ----> C2H6(g) + H2(g)
72.0 mL of a 1.40 M solution is diluted to a volume of 278 mL. A 139-mL portion of that solution is diluted using 161 mL of water. What is the final concentration.
How many grams of calcium chloride would you dissolve in water to make a total .111 M calcium chloride solution with 200 mL final volume?
To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 23.0 L of 4.75 M acid to enough water to make 500. L. What is the mass of sulfuric acid per milliliter of the diluted solution
The sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is?
An atmospheric chemist studying the pollutant SO2, places a mixture of SO2 and O2 in a 2.00 L container at 800k and 1.90 atm. when the reaction occurs, gaseous SO3 forms, and the pressure falls to 1.65 atm
A sample of water 53 g with a temperature of thirty six degree celsius is combined to 250 grams of H 2 O at 91 degree Celsius in an insulated container. Determine the final temperature after thermal equilibrium is reached?
This solution has an osmotic pressure of 2.60 atm at 25°C. If each molecule of the solute dissociates into two particles (in this solvent), what is the molar mass of this solute?
Predict stereochemistry of the products formed if the addition of bromine to fumaric acid occurs via Syn addition
A solid sample containing some Fe 2+ ion weighs 1.062g. It requires 24.12 mL 0.01562 M KMno4 to titrate the Fe2+ in the dissolved sample to a pink end point.
Predict the outcome of the following reactions represented by the following equations by using the activity series, and balance the equations.
Calculate the PH of the cathode compartment solution if the cell emf at 298K is measured to be 0.660V when (Zn^2+)=0.22 M and(P_H2)= 0.87atm
the enthalpy change for melting ice at 0degc and constant atmospheric pressure is 6.01 kjmol. calculate the quantity of
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