How long does 2 tsp of water and 1/4 of salt take to freez

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

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

Suppose you increase your walking speed from 7 m/s to 15 m/s in a period of 1 s. what is your acceleration?