Calculate the mass percent of different elements present in acetic acid `(CH_3COOH)`.

calculate the mass percent of different elements present in sodiun sulphate( Na_2SO_4 ).

Calculate the mass percentage of elements present in NaSO_4 sodium sulphate

Calculate the molar mass of CH_4 .

With decreases in concentration of an electrolytic solution , Conductivity (K) decreases and molar conductivity (^^_m) increases. Limiting molar conductivity (^^_m^@) of a strong electrolyte can be determined by graphical extrapolation method, Suggest a method for the determination of limiting molar conductivity of a weak electrolyte, taking acetic acid (CH_3COOH) as example .

Write the Henderson Hassebalch equation for an acidic buffer. Calculate the pH of an acidic buffer containing 0.1 M CH_3COOH and 0.1 M CH_3COONa . [Ka for CH_3COOH is 1.8xx10^-6].

If the mass percent of the various elements of a compound is known, its empirical formula can be calculate. What is mass percent?Give its mathematical expression.

Which of the following elements does not react with conc.acetic acid?

An element of density 7.2 g cm^(-3) occurs in bcc structure with unit cell edge of 280 pm. Calculate molecular mass of the element and number of atoms present in 100 g of the element.

Calculate the concentration of nitric acid in moles per litre in a sample which has a density of 1.41 g mL^(-1) and the mass percent of nitric acid in it being 69%.