A 0.250 M solution of HCN has a pH = 4.87.

a) Determine the [H3O+] in the solution.

b) Calculate the percent ionization of HCN in this solution.

How would each of the equilibrium be affected if nh3 were added to the test tube?

The amount of energy required to remove the outermost electron from a gaseous atom in the ground state is known as (1) first ionization energy (2) activation energy (3) conductivity (4) electronegativity

Chlorine gas was first prepared in 1774 by the oxidation of NaCl with MnO2: 2NaCl (s) + 2H2SO4 (l) + MnO2 (s) →Na2SO4 (s) + MnSO4 (s) + 2H2O (g) + Cl2 (g) Assume that the gas produced is saturated with water vapor at a partial pressure of 28.

What happens to items that have a lower density than water are submerged in water

Why is it important for scientists to be able to remove DNA from an organism?

What conditions might occur that would cause a gas not to conform to ideal gas behavior?

Which element above has 8 protons in its nucleus? a. oxygen b. carbon c. phosphorus d. sulfur

If the copper is drawn into wire whose diameter is 9.50 mm, how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/cm3.

Angle of incidence equals angle of this A. Reflection B. Refraction C. Diffraction

When conducting an experiment, a scientist should: (a) attempt to test every possibility (b) attempt to control the conditions (c) place no limits on the investigation (c) proceed without specific goals