Calculate the amount of benzoic acid `(C_6H_5COOH)` required for preparing 250 mL of 0.15 M solution in methanol.

Calculate the volume of 0.015M HCl solution required to prepare 250ml of a 5.25 (10)-3 M HCl solution ?

Calculate the number of molecules of oxalic acid (H_2C_2O_4. 2H_2O) in 100 mL of 0.2N oxxalic acid solution.

Calculate the osmotic pressure of a solution obtained by mixing 100 mL of 1.5 percent solution of urea (mol.mass of 60) and 100 mL of 3.42 percent solution of cane sugar (mol. Mass=342) at 20^@C . (R=0.82 litre atm K^-1 mol^-1)

How many moles of of HCl are present in 250cm3 of 0.5 M HCl solution .

How many moles of sodium chloride are present in 250 ml of a 0.50M NaCl solution ?

write the iupac name of compound C6H5-CH2-COOH

Concentrated HNO_(3) is 63% HNO_(3) by mass and has a density of 1.4g//mL . How many millilitres of this solution are required to prepare 250mL of a 1.20 M HNO_(3) solution ?

Calculate the normality of solution containing 31.5g of hydrated oxalic acid C2H2O4. 2H2O in 1250 ml of solution?

Calculate the molarity of each of the following soluton: 30 mL of 0.5 M H_2SO_4 , dilute to 500 mL of H2SO4.

Phenol associates in benzene to form a dimer (C_6H_5OH)_2 . The freezing point of a soluton contianing 5 g of phenol in 250 g of benzene is lowerd by 0.70^@C . Calculate the degree of association of phenol in benzene. (K_f for benzene=5.12 Km^-1)