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k=3

JS
Answered by Joshua S. Maths tutor
2890 Views

How did the perspectives on the problems of urban life in Britain change from 1870 to 1914?

In the late Victorian to Edwardian period in Britain, cities were growing. The nineteenth century was witness to a huge boom in urban population – in Birmingham for example, it had increased from seventy-...

OS
Answered by Owen S. History tutor
2035 Views

What is PED and how do we calculate it?

Price elasticity of demand (PED) is a measure of the responsiveness in demand, following a change in price, of a good (defintion). It is calculated by the formula: % change in quantity demanded/ % change ...

JD
Answered by Jamie D. Economics tutor
37659 Views

Use the following information: [[[[2H2(g) + O2(g) → 2H2O(l) ∆H = −572 kJ mol−1]]]] [[[[2H2(g) + O2(g) → 2H2O(g) ∆H = −484 kJ mol−1]]]] to calculate the enthalpy change for the process: H2O(g) → H2O(l)

Well the method I use for calculations in thermochemistry is a little different from the textbooks but is far easier to understand. 

I would approach this question by drawing out the chemical equat...

LB
Answered by Louis B. Chemistry tutor
7747 Views

Do you have any exam tips for Biology Paper 2?

So one thing I observed in my Biology class was that students would memorise every single piece of inforrmation about each biological process that was written on their 'comprehensive flashcards'. One thin...

LB
Answered by Louis B. Biology tutor
3700 Views

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