What is the reactant(s) in the chemical equation below? 2al(s) + 2naoh(aq) + 2h2o(→ 2naalo2(aq) + 3h20)

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?