3. Sodium tetraborate, Na2B407, is produced when sodium hydroxide neutralizes H3BO3. How much boric acid, H3BO3, is needed (in grams) to
make 150 metric tons of sodium tetraborate? Assume 1 metric ton equals
1000 kg and water is the second product.

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