Sand is converted to pure silicon in a three step process. The third step is sicl4(g) + 2mg(s) → 2mgcl2(s) + si(s) δh = −625. 6 kj what is the enthalpy change when 25. 0 mol of silicon tetrachloride is converted to elemental silicon?

These three organisms are interdependent on each other for their survival. what will happen if foxes are eliminated from the region? a. there will be more rabbits and less grass in the region. b. there will be more grass and fewer rabbits in the region. c. there will be fewer rabbits and less grass in the region. d. there will be more rabbits and more grass in the region.