Answer: Yes
Explanation: Silicon is never found as a free element naturally, meaning it always occurs with other elements.
Answer: Adding or removing energy from matter
Explanation:
Increase in kinetic energy as well as energy loss to the surroundings in the form of heat ( negligible)
279 g * (1 mol/180.559g glucose) * (2 mol ethanol/1 mol glucose) * (46.068g ethanol/1mol) =
142 g ethanol produced