What is the ratio of a compound that contains Ca2+ and O2-?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

What are fructose and glucose an example of?

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)