Which layer of the earth's atmosphere, is furthest away from the surface of the earth? a) exosphere b) mesosphere c) stratosphere d) troposphere

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.