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Describe how propenal, propanal and propanone can be distinguished from one another by simple chemical tests.

Propenal can be distinguished by adding bromine water, as it will go from a orange/brown solution to a colourless solution due to electrophilic addition. Propanal can be distingiushed from propanone by us...

NA
Answered by Nathan A. Chemistry tutor
10076 Views

How to differentiate y = xcos(x)

You would first of all establish which differentiation rule is required, for this question it would be useful to use the product rule splitting xcos(x) into x multiplied by cos(x). We can label u = x and ...

SC
Answered by Sophie C. Maths tutor
6588 Views

Why was there a détente between the United States and Soviet Union in the 1970’s?

One of the key reasons as to why the United States sought détente, or an easing of relations, with the Soviet Union in the 1970’s was the internal domestic issues that arose out of the war in Vietnam. Sin...

AC
Answered by Asher C. History tutor
2679 Views

Describe and explain how fish are adapted for gas exchange.

Fish gills are made up of thin plates called gill filaments, which are covered in structures called lamallae. Both the gill filaments and lamellae provide a...

NF
Answered by Natalie F. Biology tutor
23332 Views

How do I know if a verb in the perfect tense should be conjugated with avoir or être?

The perfect tense is used when we would like to describe an action that we have already done. It is usually formed by using the present tense of the verb avoir followed by a past participle. For example, ...

VJ
Answered by Vinay J. French tutor
2161 Views

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