How does you home lose thermal energy

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)

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Name the element in group 17, period 2. (periodic table)