Which of the following correctly shows the flow of energy in a food chain? hawk ⇒ snake ⇒ mouse ⇒ grass
grass ⇒ hawk ⇒ snake ⇒ mouse
mouse ⇒ snake ⇒ hawk ⇒ grass
grass ⇒ mouse ⇒ snake ⇒ hawk

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.