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Car petrol is usually some form of alkane, which has the general formula C_nH_2n+2. Let us assume we are using Butane (C₄H₁₀). The desired chemical reaction for t...

We may use from the equation sheet, that p = h ρ g. Here, we are looking for a change in pressure, so one or more of the terms on the other side of the equation must be changing too. The question tells us...

Osmosis is defined as the movement of water from an area of high water potential to an area of lower water potential, across a partially permeable membrane. This means that water molecules moves from a ve...

A good argument should consist of one clear, central idea that runs throughout your essay. This is important because you want to give a concise answer to the question. It should be simple enough that it c...

At the start of the jump, the skydiver starts accelerating downwards due to his weight (force of gravity). There is a resultant force downwards as the weight is larger than the air resistance (weight>a...