A reação entre o magnésio metálico e o cloro gasoso pode ser traduzida por: Mg (s) + Cℓ2 (g) → MgCℓ2 (s)
Em qual das seguintes condições reacionais o magnésio é o reagente limitante?
(A) 3,0 × 1023 átomos de Mg reagem com 1,5 × 1023 moléculas de Cℓ2.
(B) 0,04 mol de Mg reagem com 0,08 mol de Cℓ2.
(C) 1,5 × 1021 átomos de Mg reagem com 1,5 × 1021 moléculas de Cℓ2.
(D) 0,16 mol de Mg reagem com 0,08 mol de Cℓ2.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

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