30 points rust is formed by the interaction of iron and oxygen. when rust formed on an iron nail with a mass of 100 g, the mass of the rusted nail was 143 g. what mass of oxygen gas most likely reacted with the iron nail? (5 points) 43 g 50 g 100 g 243 g

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

What happens when the number of protons in an atom changes

Asatellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. if a geosynchronoussatellite is in an equatorial orbit, its position appearsstationary with respect to a ground station, and it is known as ageostationary satellite find the radius rof the orbit of a geosynchronous satellite that circles the earth.(note that ris measured from the center of the earth, not the surface.) you mayuse the following constants: the universal gravitational constant g is 6.67 \times 10^{-11}\; {\rm n \; m^2 / kg^2}. the mass of the earth is 5.98 \times 10^{24}\; {\rm kg}. the radius of the earth is 6.38 \times 10^{6}\; {\rm m}.