What type of reaction is H2SO4 + HI = H2S + I2 + H2O

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

Which terms are used to identify pure substances