Search our library of homework questions

Top answers

All subjects

All levels

explain why barium sulfate is used in barium meals despite being toxic

barium sulfate is insoluble

Answered by Sagar S. • Chemistry tutor

4576 Views

name 3 organelles that are present only in plant cells

cell wall, vacoule, chloroplasts

Answered by Sagar S. • Biology tutor

3713 Views

Describe the benedicts test for non reducing sugars

heat with HCl 2) neutralise with NAHCO3 3) add benedicts soln and gently heat in a water bath 4) if the soln changes colour from blue to a brick red precipitate, then non reducing sugars were involv...

Answered by Sagar S. • Biology tutor

9649 Views

I feel confident in reading and talking about a text, but how do I turn this into an essay?

The most important thing about essay writing, whether it is for a homework assignment or in the high pressure environment of an exam, is technique. How you make your arguments is just as...

Answered by Henry B. • English tutor

2170 Views

What is the difference between moles and molar?

Lets start with what a concentration is. Concentration is the amount of something in a volume. For example, 1 gram of sugar in one litre of water is 1 gram per litre. This can be written as 1g/L (the divi...

Answered by Ben R. • Chemistry tutor

50751 Views