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How would you test for the presence of glucose?

You gently heat the mixture and add 2-3 drops of Benedict's solution.If glucose is present, the solution will turn from blue to orange.
TD
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Suggest how the growth of tourism in a LIC or NEE might help to reduce the development gap.

The growth of the tourism industry means that a country's GDP grows, (the overall market value of country's services and goods) and therefore decreases the gap between the developed countries and the LIC. By...
JO
Answered by Jessica O. • Geography tutor
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Prove that the difference between the squares of two consecutive odd numbers is a multiple of 8.

(2n+3) 2 -(2n+1) 2 =(4n 2 +12n+9)-(4n 2 +4n+1)=8n+8= 8(n+1)Hence a multiple of 8
DB
Answered by Daniel B. • Maths tutor
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Prove that the square of an odd number is always 1 more than a multiple of 4

2n+1 will always be an odd number (e.g. if n is equal to 3 the answer would be 7, an odd number) So, we square 2n+1 and write this as (2n+1) 2 2n +12n 4n 2 2n+1 2n 1Then multiple out the brackets to give 4n ...
Answered by • Maths tutor
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What are the tectonic hazards associated with a destructive plate margin?

Tectonic hazards are hazard events that occur as a result of tectonic activity. There are two forms of destructive plate margins: subductive and collision. A collision plate margin occurs when two continenta...
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Answered by Rachel B. • Geography tutor
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