What two products are formed when a piece of sodium is immersed in water?

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?