A chemist wishes to prepare 148.00 mL of acetic acid/sodium acetate buffer solution with a pH of 5.29 and a total concentration of the components equal to 0.47 M. The pKa for acetic acid is 4.75. What mass of acetic acid (molar mass 60.05 g/mol) is required?
What mass of sodium acetate (molar mass 82.03 g/mol) is required?

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

How hot is the suns corona? (integrated science)

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?