What mass (in grams) of sodium acetate (CH3COONa) must be added to 100.00 mL of a 0.100 M solution of acetic acid in order to prepare a buffer solution with a pH of 4.50? The Ka of acetic acid is 1.8 × 10−5.

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.