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Y=√x cos 2x find dy/dx
Given that Ae^×+B^-×=4coshx-5sinhx. Determine the values of A and B
hat is the change in the potential energy of the system comprising the plates and the electron when the electron moves from the negative plate to the positive plate?
what is a
A mixture of 0.100 mol of NO, 0.050 mol of H2 and 0.10 mol of H2O is placed in a 1.0-L vessel at 300 K. The following equilibrium is established:
2NO(g) + 2H2(g) ⇆ N2(g) + 2H2O(g).
At equilibrium [NO] = 0.062M. Calculate the equilibrium concentrations of H2, N2 and H2O and Keq.
Strategy:
Using the balanced chemical equation, write the equilibrum constant expression, Kc, then substitute the given equilibrium concentrations to it.
A mixture of 0.100 mol of NO, 0.050 mol of H2 and 0.10 mol of H2O is placed in a 1.0-L vessel at 300 K. The following equilibrium is established:
2NO(g) + 2H2(g) ⇆ N2(g) + 2H2O(g).
At equilibrium [NO] = 0.062M. Calculate the equilibrium concentrations of H2, N2 and H2O and Keq.
A person can throw a ball at a maximum horizontal range of 120m. How high would the ball go straight up? [6 marks]
Sulfur trioxide decomposes at high temperature in a sealed container according to the reaction 2SO3(g) ⇆ 2SO2(g) + O2(g)
Initially, the vessel is charged at 1000 K with SO3(g) at a partial pressure of 0.500 atm. At equilibrium the SO3 partial pressure is 0.200 atm. Calculate the value of Kp at 1000 K.
Strategy:
Using the equilibrium table, tabulate the given initial and equilibrium partial pressures. Denote the changes in partial pressure using a variable as guided by stoichiometric coefficients in the balanced chemical equation. Solve for the unknown to calculate for the equilibrium partial pressures of SO2 and O2 and then solve for Kp.
An aqueous solution of acetic acid is found to have the following concentrations at 25°C: [CH3COOH] = 1.65 x 10-2 M; [H30+] = 5.44 x 10-4 M; and [CH3COO-] = 5.44 x 10+ M. Calculate the equilibrium at 25°C. The reaction is:
CH3COOH(aq) + H2O(I) ⇆ H3O(aq) + CH3COO-(aq)
Strategy:
Using the balanced chemical equation, write the equilibrium constant expression, Kc, then substitute the given equilibrium concentrations to it.
An aqueous solution of acetic acid is found to have the following concentrations at 25°C: [CH3COOH] = 1.65 x 10-2 M; [H30+] = 5.44 x 10-4 M; and [CH3COO-] = 5.44 x 10+ M. Calculate the equilibrium at 25°C. The reaction is:
CH3COOH(aq) + H2O(I) ⇆ H3O(aq) + CH3COO-(aq)
A librarian of a school claims that all their senior high school students read an average of 10 books a month. A random sample of senior high students read an average 12 books. The confidence statement is 95%.
#340153 on Dec 2023