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A student obtained 3.7g of methyl cinnamate (162g/mol) from 6.5g of cinnamic acid (148g/mol) and 2.0g of methanol (32g/mol). Determine which reagent is limiting and calculate the percentage yield achieved by the student.

Reaction equation:cinnamic acid + methanol --> methyl cinnamate (+ water).Determine the limiting reagent:Calculate the number of moles of each reagent using the triangle g/(GFM)*(n).n = g/GFM cinnamic ...

LM
Answered by Libby M. Chemistry tutor
2641 Views

factorise and simplify (x^2+4x+4)/(3x^2+15x+18)

Factorise: Top (x^2+4x+4) = (x+2)^2Bottom (3x^2+15x+18) = 3(x^2+5x+6) = 3(x+3)(x+2)Simplify: ((x+2)^2)/(3(x+3)(x+2)) = (x+2)/(3(x+3))

NS
Answered by Nikita S. Maths tutor
3134 Views

Explain how polymerase chain reaction is used in DNA fingerprinting

DNA extracted from a crime scene is normally available in small quantities so PCR can be used to amplify this quantity to a reasonable concentration which can then be used to run a gel electrophoresis to ...

NS
Answered by Nikita S. Biology tutor
14076 Views

Explain how one study demonstrates localization of function in the brain.

The brain is seen as the command centre of human activity and therefore, psychologists aim to develop a deeper understanding of its role and how it matures, develops and adapts over lifetime. Prior to the...

C(
8016 Views

How do I expand (2x+5)(9x-2)?

First, remember that a set of closed brackets directly beside a single term/another set indicates that they are being multiplied. The key to expansions like this is to do it a particular order every time ...

ME
Answered by Meron E. Maths tutor
3150 Views

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