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When water freezes, its volume is increased by one-eleventh. In other words, the volume of ice equals the sum of the volume of the original amount of water and the product of one-eleventh and the volume of the water. If 979 cubic centimeters of water is to be frozen, what will be the volume of the ice that will be formed?
Consider the reaction Cl2(g) + I2(g) 2 ICl(g), which is endothermic as written. What would be the effect on the equilibrium position of increasing the volume of the reaction container
Assume equilibrium with the calcium carbonate in the sediment and calculate the concentration of calcium ion (in mg/L -1) in the water (25C).
When the following equation is balanced, what is the mole ratio of H2O to Be3N2?
What is the theoretical yeild of sodium carbonate for the equation: 2NaHCO3(s)--> Na2CO3(aq) + H2O(g) + CO2(g)
The student found that 8.67mL of NaOH solution was needed to titrate a 0.0544g sample of the acid to the equivalence point. Calculate the mass of unknown required for a 30.0mL titration.
write mechanisms for the following reactions, which are used in chemical tests and derivative preparations: (a) the reaction of butanal with 2,4 dinitrophenylhydrazine reagent.
if the the atmospheric pressure is 685 mm Hg, what would the partial pressure of oxygen and of nitrogen be?
95% wt solution of ethanol in water has density of 0.804gm/mL. Find mass of 1.00L of this solution and the number of grams of ethanol per litre ?
A buffer is formed by mixing 100 mL of 0.1 M NH4Cl with 50 mL of 0.3 M NH3. To this solution 12 mL of 0.1 M NaOH is added. What is the approximate pH of the new solution after neutralization? Assume a Kb of 1.8 × 10^-5 for the weak base.
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath.
What is the molar solubility of CaF2 in 0.10 M NaF solution at 25°C? The Ksp for CaF2 is 1.5x10^-10.
A 4.5 g sample of LiCl at 25 degrees Celsius dissolves in 25 mL of water also at 25 degrees Celcius. The final equilibrium temperature of the resulting solution is 60.8 degrees celsius. What is the enthalpy of solution delta H subscript 8 of LiCl ..
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