How many molecules are in 2.00 grams of h2o

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Based on its chemical properties, identify the position of each chemical family on the periodic table.

What energy is it when you flip on a switch on a lamp