Top answers

Why indentation is important in Python and what is the scope of a global variable?

Normally, in every programming language we should normally use indentation in order to have a nice style and a readable code. But Python programs are structured through indentation, so different code blocks ...
GP
3116 Views

The ionic product of water, Kw = 2.93 × 10−15 mol dm−6 at 10 °C. Calculate the pH of a 0.0131 mol dm−3 solution of calcium hydroxide at 10 °C Give your answer to two decimal places.

[OH-] = 0.0262 mol dm-3[H+] = (Kw/[OH-]) = 2.93 x 10−15 / 0.0262 (= 1.118 x 10−13) pH = (− log (1.118 x 10−13) = 12.9514 = 12.95
WB
Answered by William B. • Chemistry tutor
7036 Views

What is the Preceding Direct Object rule?

I distinctly remember my A-Level French teacher repeatedly highlighting mistakes such as the one below in my essays:La fille que j'ai vu à côté du restaurant, elle pleurait.In French when we use a sentence i...
CD
Answered by Conor D. • French tutor
2379 Views

What is an effective way of learning French?

Learning a foreign language is half about learning the grammar and the verbs, and half about learning some vocabulary. The first part is usually not the easiest or the funniest part but it is essential and o...
LG
Answered by Lucie G. • French tutor
2193 Views

Triangle ABC has perimeter 20 cm. AB = 7 cm. BC = 4 cm. By calculation, deduce whether triangle ABC is a right-angled triangle. 4 marks.

We know that the perimeter of the triangle is 20cm and we also know the value of two of the sides of the triangle, AB=7cm and BC=4cm. We can work out the length of the third side (AC) by subtracting the know...
CM
Answered by Charlotte M. • Maths tutor
22359 Views