How did everyone answer the differences in work done by the two change in gravitational potential energy equations?
I just said Model X assumed a value for g at 9.8 which is not always accurate, but both equations gave similar results because Ep = mgh works at this relatively low-value altitude...
I picked B for the polymer in Q11 because as in glucose, two hydroxyl groups (OH) condense to expel a H2O and leave only ONE oxygen atom to form the link. None of the other options display this.
D looked correct at first but having an oxygen on both sides would mean that they had condensed to...