Consider the positions of carbon, nitrogen, potassium, and calcium on the periodic table. the atoms of which element attract electrons most strongly in chemical bonds? a. carbon b. calcium c. nitrogen d. potassium

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Answer explain why it is not possible to deduce a complete order of reactivity.

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