At the end of the Paleozoic Era, covered the Earth. This allowed reptiles to flourish and spread across Earth. 1. grasslands
2. deserts
3. swamps​

Calculate the number of molecules present in 0.750 mol of mgo.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

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.