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Draw the chemical structures of butane, butene and butyne.

I would then go through with the student and explain that an alkane is a hydrocarbon made up of single carbon-carbon bonds only. This is why butane ends in -ane, it begins with but- due to the number of carb...
GI
Answered by Gavin I. • Chemistry tutor
11067 Views

Discuss the bonds which comprise the tertiary structure of protein.

Bonds in a protein's tertiary structure occur entirely between the highly variable R-groups of the amino acyl residues. Firstly, hydrogen bonds further to those in the secondary structure may form between th...
JB
Answered by Jamie B. • Biology tutor
7767 Views

12 + 37 + 47

12 + 37 + 47 = (10 + 30 + 40) + (2 + 7 + 7) = 80 + 16 = 96 It is important to visualize well the operation, being able to separate and put together the numbers that are easy to calculate together. This makes...
MH
Answered by Marie H. • Maths tutor
4032 Views

Tout d’abord, peux-tu me donner quelques renseignements sur toi ?

Je m'appelle Marie, j'ai 19 ans. ma date de naissance est le 18 mai 1998 J'ai un frère et une soeur. Je suis né à Paris et je suis française. Je suis une étudiante à l’université de Bristol, j’étudie la Zool...
MH
Answered by Marie H. • French tutor
3623 Views

Describe 2 features of the music in this extract that would suggest an African influence

Polyphonic rhythms similar to those used within the African drumming style - Use of the Djembe - Use of African spoken language - The shaker used to good effect to create crickets/insect sounds
CP
Answered by Charles P. • Music tutor
4398 Views