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When should you use the imperfect and when the "passé composé" while narrating an episode in the past?

This is one of the trickiest aspects of learning how to use verbs in French, since English often lacks the clear distinction between the imperfect (in French expressed with verb forms with endings like '- ai...
BS
Answered by Bennett S. • French tutor
3119 Views

Why does fractional distillation work?

Fractional distillation relies on different fractions in the organic mixture having different boiling points. The difference in these boiling points could be caused by several things but the main determinant...
RJ
Answered by Rahul J. • Chemistry tutor
18451 Views

Explain why diffusion is an important process in plants and animals.

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration down a concentration gradient. Lots of essential processes rely on this movement such as the diffusio...
RJ
Answered by Rahul J. • Biology tutor
23564 Views

Solve for y: 5(y – 2) + 2(y – 3) = 19

Most important thing is to do the same thing to both sides of the equation. 5(y – 2) + 2(y – 3) = 19 Step 1. Multiply out the brackets: 5y - 10 + 2y - 6 = 19 Step 2. Collect like terms & Simplify: 5y + 2...
RJ
Answered by Rahul J. • Maths tutor
11137 Views

what is osmosis and give an example?

Osmosis is the passive movement of water through a partially permeable membrane from a high concentration of water to a low concentration of water. An example of this is when water moves from soil into a roo...
GM
Answered by Gilly M. • Biology tutor
6875 Views