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Quotient Rule: dY/dx(u/v)=(u'v-v'u)/v2
=(6x-2x2)/x4 (Collect numerator x terms.)
=(6-2x)/x3 (Cancel the fraction by a factor of x.)
Red blood cells have a biconcave disk shape, meaning that it increases their surface area and allows for more rapid diffusion of oxygen into and out of the cell.
Red blood cells do not have a nucleus so they can contain more haemoglobin, this is what combines with oxygen to form oxyhaemoglobin and so the fact that red blood cells do not contain a nucleus means that they can maximise their oxygen carrying capacity.see more
2K(s) + 2H2O(l) = 2KOH(aq) + H2(g)
Potassium (K) is a group 1 metal, which is a solid.
Water (H2O) reacts with Potassium to form Potassium Hydroxide (KOH) and Hydrogen (H2).
Hydrogen exists naturally as a diatomic molecule and is usually a gas at room temperature, so it is written as H2(g).see more