What are the spectator ions in this precipitation reaction ?
Na 2 SO 4 +BaBr 2 BaSO 4 +2 NaBr

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Identify and describe the three ways that mutations affect organisms.

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?