Sodium and chlorine combine to form table salt. given the chemical reaction, how many grams of 2na + cl2 would be required to produce 4 grams of table salt? a) 2 grams b) 3 grams c) 4 grams d) 8 grams

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

The force will determine the acceleration.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.