Which types of clouds are bright white ad fluffy, sometimes forming shapes or pictures? options: 1.)cirrus 2.)stratus 3.)cumulus

How is the way a mixture is combined different from how a compound is combined?

The term gas is limited to those substances that exist in the gaseous state at

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o