What is the name of Ba(OH)2

Which statement best explains the relationship between an area is geography and the temperature of its surface water

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?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?