A.) magnesium oxide + hydrochloric acid
B.) calcium carbonate + nitric acid
C.) sodium hydroxide + sulfuric acid
D.) acidified potassium manganite(VII) + iron(II) sulfate
E.) potassium carbonate + hydrochloric acid
F.) zinc + hydrochloric acid
G.) potassium iodide + sodium thiosulfate

1.) In which of the above reactions Titration method can be used?
2.) Suggest an indicator that can be used for the acid-alkali titration(s).

The reaction q+r2=r2q is found to be first order in r2 and

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?