Search our library of Chemistry questions

Top answers

Chemistry

All levels

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 ...

Answered by Libby M. • Chemistry tutor

2504 Views

How can work out the number of protons, neutrons and electrons in this atom of an element?

Each element has its own individual atomic number which can be found on the periodic table. This number is the number of protons in each atom of this element . As protons have each have a charge of +1 and...

Answered by Jessica H. • Chemistry tutor

3297 Views

What product is formed upon addition of dimethylamine to ethanoyl chloride? Provide a curly-arrow mechanism for the formation of this product.

See whiteboard for mechanism and product formed (shown in skeletal formula).

Answered by Patrick T. • Chemistry tutor

1860 Views

Phosphorus(III) chloride molecules are pyramidal with a bond angle less than 109.5°. Explain why a phosphorus(III) chloride molecule has this shape and bond angle.

Phosphorous (III) Chloride consists of one phosphorous atom covalently linked to 3 individual chlorine atoms. Phosphorous is found in group 5 of the periodic table, hence it has 5 outer shell electrons, i...

Answered by Tutor171831 D. • Chemistry tutor

8091 Views