How many moles of Cu are needed to react with 6.50 moles of AgNO;? Cu + 2 AgNO3 + Cu(NO3)2 + 2 Ag

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?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum

Light waves travel than sound waves.