What product(s) forms at the cathode in the electrolysis of an aqueous solution of nacl?

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.

An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8