Calculate the moles of NO2 produced when 4.00 x 1023 molecules of NO reacts with sufficient oxygen. 2 NO + O2 → 2 NO2

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 neutrons does an element have if its atomic number is 50 and its mass number is 166

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer