You text them to tell them that you are no longer BFFs, but the planet is on the far side of the sun compared to earth - 378 million km away. The radio signal carrying your message travels at the speed of light: 3.0 x 108 m/s. Assuming perfect communication transmission to and from Mars, when's the
earliest you could expect to receive their reply to your message?
Your final answer should be expressed in a sentence or two, and given in minutes and seconds, without any decimals (there is no such

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.