A teacher wrote the following part of a balanced chemical equation Cu + 2AgNO3 -->

To show the conservation of matter in the chemical reaction, how many silver (Ag) atoms will be needed on the right-hand side of the balanced equation?

A - 2

B - 0

C - 1

D - 3

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.