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What is a test for iron(III) compounds?

Using thiocyanate ions to give a red complex. During the session I will go through the reaction mechanism and evaluation of soluble / insoluble products.

Answered by Anmol S. • Chemistry tutor

3626 Views

How do I integrate 4x*exp(x^2 - 1) with respect to x?

During the session I would go step by step through the integration by substitution.

Answered by Anmol S. • Maths tutor

2991 Views

When to use the present participle (or gerund) in French and how is it different to the English gerund (ING-form)?

The French gerund is a verb form that ends with -ant. Just like the ING-form in English, it has various uses.
First, it can express a progressive action (an action that is taking place/in the proce...

Answered by Fanny T. • French tutor

2849 Views

How did the Nazis try to rebuild the German economy after 1933?

The popularity of the Nazis was in a large part due to their promise in their manifesto to rebuild Germany after the shocks of the War and the Great Depression.To achieve this, they limited imports to the...

Answered by Robert P. • History tutor

3306 Views

In a school 2/5 students play an instrument. Of those students 3/7 play the violin. Find the ratio of students who play the violin compared to the students who do not play the violin.

First step: Find the number of students out of the whole school who play the violin. 2/5 x 3/7= 6/35 (Simplest version of the fraction) Take the denominator to represent the number of students in...

Answered by Neha B. • Maths tutor

2631 Views