What percentage of carbon dioxides mass is carbon? what percentage is oxygen?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.