when burning magnesium is placed in a glass jar of carbon dioxide, continue to burn and black solid is produce. question 1=How would you show that black jar contains co2?

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

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Is a pencil falling to the floor anon contact force, a force, or a contact force