__?___ NCl₃(l)  __?___ N₂(g) +___?__ Cl₂(g)

The lowest whole number coefficients to balance the equation above would be ____, ____, and ____.  

Please answer as a 3 digit number and do not use commas or spaces.  If there is only one mole of a compound/element, please use a 1 instead of a zero.

__?___ Na(s) + __?___ O₂(g) __?___ Na₂O(S)

The lowest whole number coefficients to balance the equation above would be  ____, ____, and ____. 

Please answer as a 3 digit number and do not use commas or spaces.  If there is only one mole of a compound/element, please use a 1 instead of a zero.

1. The colour of the liquid changed from blue to yellow.
2. The solid got smaller.
3. The solution temperature changed from 25 °C to 30 °C.
4. Bubbles formed in the container.

Name two industrial or commercial processes that use chemical reactions to produce energy.