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explain why there is a decrease in first ionisation energy between elements phosphorus and sulfur

The electrons are packed in singly occupied orbitals in the 3p subshell in phosphorus, however in sulfur, the 4th electron is placed into an orbital that already has an electron. Because electrons are neg...

Answered by Sagar S. • Chemistry tutor

9517 Views

Poverty and the struggle to make a living is a central theme in ‘The Grapes of Wrath’. Explore the handling of this theme in ‘The Grapes of Wrath'

When approaching this essay question, it is important to relate how the theme of poverty affects the character’s lives in ‘The Grapes of Wrath’ and as a consequence means they are unable to make a suffici...

Answered by Abigail G. • English Literature tutor

9646 Views

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

barium sulfate is insoluble

Answered by Sagar S. • Chemistry tutor

4916 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

10314 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

2346 Views