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The molar heat of vaporization for liquid water is 40.6 kJ/mole. How much energy is required to change 1.6 g of liquid water to steam if the water is already at 100oC?
If 5.97 ml of a solution contains 2.54 mg of sodium ion, What is the molarity of the sodium chloride solution
A buffer is prepared by adding 0.30 mol CH3COONa to 2.0 L of a 0.10 M CH3COOH solution. Calculate the pH after 0.030 mol HCl are added to the buffer. (Ka for CH3COOH = 1.8 x 10-5)
Which of the following is an accurate comparison of the properties of nitrogen and oxygen. A. Nitrogen uses more oxidation states in its compounds than oxygen does
Indicate whether the pH is equal to 7, greater than 7, or less than 7 at the equivalence point for the following titrations at 25oC. a) HF + LiOH
What is the final temperature of a mixture of that 5.00 x 102 mL of hot water at 95.0°C and 475 g of -12.0°C ice cubes? (NOTE that in this process, the ice heats up to its melting point, melts, and then heats to the final temperature of the mixtur..
What mass of Na2C2O4 was present initially?
One mole of a monatomic ideal has at a temp of 500K and 6atm pressure is subjected to the following changes: (all are reversible changes)
What must be the reaction temperature if a rate of 1.000 x 10^-9 M/s is required and [C] must be kept at 0.03000M. What must be the value of k to achieve the necessary rate?
Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NOREACTION.
will the reaction occur if the partial pressures of each of the components are P(Cl2) = 4.2 bar, P(F2) = 3.3 bar, and P(ClF) = 0.092 bar. Is this more or less favorable than standard state conditions
If a reaction is second order in hydroxide ion by explain what factor the initial rate would change if the concentration of OH- was doubled
Calculate the equilibrium concentrations of I2, Cl2, and ICl. (Kc = 0.110 at this temperature.)
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