Please help me with this question I’ll give mark you brainiest if it’s correct

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?

How many atoms are there in 5.70 mol of mg

How many moles of bromine are needed to produce 3.23 moles of potassium bromide